diff --git a/cmd/ll/main.go b/cmd/ll/main.go
index cda6c48..02688c5 100644
--- a/cmd/ll/main.go
+++ b/cmd/ll/main.go
@@ -8,22 +8,18 @@ import (
 func main() {
 	list := lists.NewSingly[string]("zero", "one", "two", "three", "four", "five")
 	fmt.Println(list)
-	list.Push("-one", "-two")
+	list.InsA(0, "after-1", "after-2")
+	fmt.Println(list)
+	list.InsB(0, "-two", "-one")
 	fmt.Println(list)
 
-	list.Swap(0, 2)
+
+
+	//list.Swap(0, 2)
 	fmt.Println(list)
 
 	intList := lists.NewSingly[int](100, 5, -1, 1000, 200, 1337)
 	fmt.Println(intList)
 
-	intList.Sort(func(vi, vj int) bool {
-		return vi < vj
-	})
-	fmt.Println(intList)
-
-	intList.Sort(func(vi, vj int) bool {
-		return vj < vi
-	})
-	fmt.Println(intList)
+	//intList.Get(1000)
 }
diff --git a/lists/main.go b/lists/main.go
index b9371c4..4fb0528 100644
--- a/lists/main.go
+++ b/lists/main.go
@@ -2,13 +2,17 @@ package lists
 
 import (
 	"github.com/reklesio/gods"
+	"github.com/reklesio/gods/stacks"
 )
 
 // The interface all the lists must implement.
 type List[V any] interface {
 	gods.Container[V]
-	Push(...V)
-	// Get length of the list
+	stacks.Stack[V]
+
+	// Like push in stacks.
+	Put(...V)
+	// Get length of the list.
 	Len() int
 	// Get the value by index.
 	Get(int) V
@@ -16,13 +20,13 @@ type List[V any] interface {
 	Del(int)
 	// Change already existing value.
 	Set(int, V)
-	// Add the values
+	// Add the values to the end of the list.
 	Add(...V)
 
-	// Insert the value before the specifed index.
-	InsB(V, int)
-	// Insert the value after the specified index.
-	InsA(int, V)
+	// Insert the value before the specified index.
+	InsB(int, ...V)
+	// Ansert values after the specified index.
+	InsA(int, ...V)
 
 	// Swap elements by indexes specified in arguments.
 	Swap(i, j int)
diff --git a/lists/single.go b/lists/single.go
index 3d130b6..589c510 100644
--- a/lists/single.go
+++ b/lists/single.go
@@ -45,7 +45,7 @@ func NewSingly[V any](values ...V) List[V] {
 }
 
 func (ll *sLinkedList[V]) Empty() bool {
-	return ll == nil
+	return ll.ln == 0
 }
 
 func (ll *sLinkedList[V]) Size() int {
@@ -87,32 +87,36 @@ func (ll *sLinkedList[V]) Set(i int, v V) {
 }
 
 // Insert the V value before the i-th element.
-func (ll *sLinkedList[V]) InsB(v V, i int) {
-		if i == 0 {
-			ll.before = &sElement[V]{
-				value: v,
-				next: ll.before.next,
-			}
-			return
-		}
-		el := ll.getEl(i-1)
+func (ll *sLinkedList[V]) InsB(index int, values ...V) {
+	if index == 0 {
+		ll.Put(values...)
+		return
+	}
+
+	el := ll.getEl(index-1)
+	for _, v := range values {
 		el.next = &sElement[V]{
 			value: v,
 			next: el.next,
 		}
+		el = el.next
+	}
+	ll.ln += len(values)
 }
 
-// Insert the V value after the i-th element.
-func (ll *sLinkedList[V]) InsA(i int, v V) {
-		el := ll.getEl(i)
+func (ll *sLinkedList[V]) InsA(index int, values ...V) {
+	el := ll.getEl(index)
+
+	for _, v := range values {
 		el.next = &sElement[V]{
 			value: v,
 			next: el.next,
 		}
+		el = el.next
+	}
+	ll.ln += len(values)
 }
 
-// Swap element values indexed by i1 and i2.
-// Panic on "index out of range".
 func (ll *sLinkedList[V]) Swap(i1, i2 int) {
 	if i1 == i2 {
 		return
@@ -125,7 +129,6 @@ func (ll *sLinkedList[V]) Swap(i1, i2 int) {
 		el2.value, el1.value
 }
 
-// Deletes the element by its index.
 func (ll *sLinkedList[V]) Del(i int) {
 	if i == 0 {
 		ll.before.next =
@@ -145,15 +148,24 @@ func (ll *sLinkedList[V]) Del(i int) {
 	ll.ln--
 }
 
-// Push in the beginning of the list.
-func (ll *sLinkedList[V]) Push(values ...V) {
-	for _, value := range values {
-		ll.push(value)
+func (ll *sLinkedList[V]) Put(values ...V) {
+	ln := len(values)
+	for i:=ln-1 ; i >= 0 ; i-- {
+		ll.Push(values[i])
 	}
 }
 
-// Push in the beginning of the list.
-func (ll *sLinkedList[V]) push(v V) {
+func (ll *sLinkedList[V]) Pop() V {
+	el := ll.before.next
+	if el == nil {
+		panic(gods.IndexRangeErr)
+	}
+	ll.before.next = el.next
+	ll.ln--
+	return el.value
+}
+
+func (ll *sLinkedList[V]) Push(v V) {
 	prevNext := ll.before.next
 	nextNext := &sElement[V]{
 		next: prevNext,