diff --git a/leetcode/5560.Design-Front-Middle-Back-Queue/5560. Design Front Middle Back Queue.go b/leetcode/5560.Design-Front-Middle-Back-Queue/5560. Design Front Middle Back Queue.go
new file mode 100644
index 000000000..64e7bec8e
--- /dev/null
+++ b/leetcode/5560.Design-Front-Middle-Back-Queue/5560. Design Front Middle Back Queue.go	
@@ -0,0 +1,78 @@
+package leetcode
+
+type FrontMiddleBackQueue struct {
+	Queue  []int
+	Length int
+}
+
+func Constructor() FrontMiddleBackQueue {
+	return FrontMiddleBackQueue{Queue: make([]int, 0), Length: 0}
+}
+
+func (this *FrontMiddleBackQueue) PushFront(val int) {
+	tmp := make([]int, this.Length+1)
+	copy(tmp[1:], this.Queue)
+	tmp[0] = val
+	this.Queue = tmp
+	this.Length++
+}
+
+func (this *FrontMiddleBackQueue) PushMiddle(val int) {
+	tmp := make([]int, this.Length+1)
+	idx := this.Length / 2
+	copy(tmp[:idx], this.Queue[:idx])
+	tmp[idx] = val
+	copy(tmp[idx+1:], this.Queue[idx:])
+	this.Queue = tmp
+	this.Length++
+}
+
+func (this *FrontMiddleBackQueue) PushBack(val int) {
+	this.Queue = append(this.Queue, val)
+	this.Length++
+}
+
+func (this *FrontMiddleBackQueue) PopFront() int {
+	if this.Length == 0 {
+		return -1
+	}
+	res := this.Queue[0]
+	this.Queue = this.Queue[1:]
+	this.Length--
+	return res
+}
+
+func (this *FrontMiddleBackQueue) PopMiddle() int {
+	if this.Length == 0 {
+		return -1
+	}
+	mid := (this.Length - 1) / 2
+	res := this.Queue[mid]
+	tmp := make([]int, len(this.Queue)-1)
+	copy(tmp[:mid], this.Queue[:mid])
+	copy(tmp[mid:], this.Queue[mid+1:])
+	this.Queue = tmp
+	this.Length--
+	return res
+}
+
+func (this *FrontMiddleBackQueue) PopBack() int {
+	if this.Length == 0 {
+		return -1
+	}
+	res := this.Queue[this.Length-1]
+	this.Queue = this.Queue[:this.Length-1]
+	this.Length--
+	return res
+}
+
+/**
+ * Your FrontMiddleBackQueue object will be instantiated and called as such:
+ * obj := Constructor();
+ * obj.PushFront(val);
+ * obj.PushMiddle(val);
+ * obj.PushBack(val);
+ * param_4 := obj.PopFront();
+ * param_5 := obj.PopMiddle();
+ * param_6 := obj.PopBack();
+ */
diff --git a/leetcode/5560.Design-Front-Middle-Back-Queue/5560. Design Front Middle Back Queue_test.go b/leetcode/5560.Design-Front-Middle-Back-Queue/5560. Design Front Middle Back Queue_test.go
new file mode 100644
index 000000000..23cd5886f
--- /dev/null
+++ b/leetcode/5560.Design-Front-Middle-Back-Queue/5560. Design Front Middle Back Queue_test.go	
@@ -0,0 +1,107 @@
+package leetcode
+
+import (
+	"fmt"
+	"testing"
+)
+
+func Test_Problem707(t *testing.T) {
+	obj := Constructor()
+	fmt.Printf("obj = %v %v\n", MList2Ints(&obj), obj)
+	obj.PushFront(1)
+	fmt.Printf("obj = %v %v\n", MList2Ints(&obj), obj)
+	obj.PushBack(2)
+	fmt.Printf("obj = %v\n", MList2Ints(&obj))
+	obj.PushMiddle(3)
+	fmt.Printf("obj = %v\n", MList2Ints(&obj))
+	obj.PushMiddle(4)
+	fmt.Printf("obj = %v\n", MList2Ints(&obj))
+	param1 := obj.PopFront()
+	fmt.Printf("param1 = %v obj = %v\n", param1, MList2Ints(&obj))
+	param1 = obj.PopMiddle()
+	fmt.Printf("param1 = %v obj = %v\n", param1, MList2Ints(&obj))
+	param1 = obj.PopMiddle()
+	fmt.Printf("param1 = %v obj = %v\n", param1, MList2Ints(&obj))
+	param1 = obj.PopBack()
+	fmt.Printf("param1 = %v obj = %v\n", param1, MList2Ints(&obj))
+	param1 = obj.PopFront()
+	fmt.Printf("param1 = %v obj = %v\n", param1, MList2Ints(&obj))
+	fmt.Printf("-----------------------------------------------------------------\n")
+	obj = Constructor()
+	fmt.Printf("obj = %v %v\n", MList2Ints(&obj), obj)
+	obj.PushFront(1)
+	fmt.Printf("obj = %v %v\n", MList2Ints(&obj), obj)
+	obj.PushFront(2)
+	fmt.Printf("obj = %v %v\n", MList2Ints(&obj), obj)
+	obj.PushFront(3)
+	fmt.Printf("obj = %v %v\n", MList2Ints(&obj), obj)
+	obj.PushFront(4)
+	fmt.Printf("obj = %v %v\n", MList2Ints(&obj), obj)
+	param1 = obj.PopBack()
+	fmt.Printf("param1 = %v obj = %v\n", param1, MList2Ints(&obj))
+	param1 = obj.PopBack()
+	fmt.Printf("param1 = %v obj = %v\n", param1, MList2Ints(&obj))
+	param1 = obj.PopBack()
+	fmt.Printf("param1 = %v obj = %v\n", param1, MList2Ints(&obj))
+	param1 = obj.PopBack()
+	fmt.Printf("param1 = %v obj = %v\n", param1, MList2Ints(&obj))
+	fmt.Printf("-----------------------------------------------------------------\n")
+	obj = Constructor()
+	fmt.Printf("obj = %v %v\n", MList2Ints(&obj), obj)
+	obj.PushMiddle(1)
+	fmt.Printf("obj = %v\n", MList2Ints(&obj))
+	obj.PushMiddle(2)
+	fmt.Printf("obj = %v\n", MList2Ints(&obj))
+	obj.PushMiddle(3)
+	fmt.Printf("obj = %v\n", MList2Ints(&obj))
+	param1 = obj.PopMiddle()
+	fmt.Printf("param1 = %v obj = %v\n", param1, MList2Ints(&obj))
+	param1 = obj.PopMiddle()
+	fmt.Printf("param1 = %v obj = %v\n", param1, MList2Ints(&obj))
+	param1 = obj.PopMiddle()
+	fmt.Printf("param1 = %v obj = %v\n", param1, MList2Ints(&obj))
+	fmt.Printf("-----------------------------------------------------------------\n")
+	obj = Constructor()
+	fmt.Printf("obj = %v %v\n", MList2Ints(&obj), obj)
+	obj.PushMiddle(8)
+	fmt.Printf("obj = %v\n", MList2Ints(&obj))
+	param1 = obj.PopMiddle()
+	fmt.Printf("param1 = %v obj = %v\n", param1, MList2Ints(&obj))
+	param1 = obj.PopFront()
+	fmt.Printf("param1 = %v obj = %v\n", param1, MList2Ints(&obj))
+	param1 = obj.PopBack()
+	fmt.Printf("param1 = %v obj = %v\n", param1, MList2Ints(&obj))
+	param1 = obj.PopMiddle()
+	fmt.Printf("param1 = %v obj = %v\n", param1, MList2Ints(&obj))
+	obj.PushMiddle(1)
+	fmt.Printf("obj = %v\n", MList2Ints(&obj))
+	obj.PushMiddle(10)
+	fmt.Printf("obj = %v\n", MList2Ints(&obj))
+	fmt.Printf("-----------------------------------------------------------------\n")
+	obj = Constructor()
+	fmt.Printf("obj = %v %v\n", MList2Ints(&obj), obj)
+	param1 = obj.PopMiddle()
+	fmt.Printf("param1 = %v obj = %v\n", param1, MList2Ints(&obj))
+	obj.PushMiddle(3)
+	fmt.Printf("obj = %v %v\n", MList2Ints(&obj), obj)
+	obj.PushFront(6)
+	fmt.Printf("obj = %v %v\n", MList2Ints(&obj), obj)
+	obj.PushMiddle(6)
+	fmt.Printf("obj = %v %v\n", MList2Ints(&obj), obj)
+	obj.PushMiddle(3)
+	fmt.Printf("obj = %v %v\n", MList2Ints(&obj), obj)
+	param1 = obj.PopMiddle()
+	fmt.Printf("param1 = %v obj = %v %v\n", param1, MList2Ints(&obj), obj)
+	obj.PushMiddle(7)
+	fmt.Printf("obj = %v %v\n", MList2Ints(&obj), obj)
+	param1 = obj.PopMiddle()
+	fmt.Printf("param1 = %v obj = %v %v\n", param1, MList2Ints(&obj), obj)
+	obj.PushMiddle(8)
+	fmt.Printf("obj = %v %v\n", MList2Ints(&obj), obj)
+	// 	["FrontMiddleBackQueue","popMiddle","pushMiddle","pushFront","pushMiddle","pushMiddle","popMiddle","pushMiddle","popMiddle","pushMiddle"]
+	// [[],[],[3],[6],[6],[3],[],[7],[],[8]]
+}
+
+func MList2Ints(head *FrontMiddleBackQueue) []int {
+	return head.Queue
+}