diff --git a/src/main/kotlin/dsl/ast/model/node/Node.kt b/src/main/kotlin/dsl/ast/model/node/Node.kt
index d6d2549..53a5cd0 100644
--- a/src/main/kotlin/dsl/ast/model/node/Node.kt
+++ b/src/main/kotlin/dsl/ast/model/node/Node.kt
@@ -3,7 +3,8 @@ package dsl.ast.model.node
 import dsl.token.model.entity.TokenPosition
 
 abstract class Node(numberOfChildren: Int, val position: TokenPosition) {
-    protected var children: MutableList<Any> = MutableList(numberOfChildren) { NONE }
+    var children: MutableList<Any> = MutableList(numberOfChildren) { NONE }
+        protected set
 
     constructor(children: List<Any>, position: TokenPosition) : this(children.size, position) {
         this.children = children.toMutableList()
@@ -22,12 +23,12 @@ abstract class Node(numberOfChildren: Int, val position: TokenPosition) {
 
         println(newPrefix + (if (first) "" else if (newLast) "└─" else "├─") + nodeName + " " + position)
         newPrefix += if (newLast) "   " else "│  "
-        for((index, child) in children.withIndex()) {
+        for ((index, child) in children.withIndex()) {
             newLast = index == children.size - 1
-            if(child is Node) {
+            if (child is Node) {
                 child.pretty(newPrefix, newLast, false)
             } else {
-                println(newPrefix + (if(newLast) "└ " else "├ ") + child)
+                println(newPrefix + (if (newLast) "└ " else "├ ") + child)
             }
         }
     }
diff --git a/src/main/kotlin/dsl/ast/parser/AbstractIterableParser.kt b/src/main/kotlin/dsl/ast/parser/AbstractIterableParser.kt
new file mode 100644
index 0000000..6e2ba06
--- /dev/null
+++ b/src/main/kotlin/dsl/ast/parser/AbstractIterableParser.kt
@@ -0,0 +1,44 @@
+package dsl.ast.parser
+
+import dsl.ast.model.entity.ParserOutput
+import dsl.ast.model.node.Node
+import dsl.token.model.entity.TokenList
+import dsl.token.model.entity.TokenPosition
+import dsl.token.model.enumeration.TokenType
+
+class AbstractIterableNode(beginNode: Node, items: List<Node>) : Node(items, beginNode.position)
+
+abstract class AbstractIterableParser(
+    private val beginTokenType: TokenType,
+    private val itemParser: Parser,
+    private val endTokenType: TokenType,
+    private val createNode: (List<Node>, TokenPosition) -> Node
+) : Parser() {
+    override fun tryToParse(input: TokenList): ParserOutput {
+        val emptyIterableParser = allOf(listOf(terminal(beginTokenType), terminal(endTokenType))) { object : Node(0, it[0].position) {} }
+
+        val nonEmptyIterableParser = allOf(
+            listOf(terminal(beginTokenType),
+                allOf(listOf(
+                    itemParser,
+                    optional(repeat(allOf(
+                        listOf(
+                            terminal(TokenType.COMMA),
+                            itemParser
+                        )
+                    ) { it[1] }) { list, position -> object : Node(list, position) {} }
+                ))) { list ->
+                    object : Node(listOf(list[0]) + list[1].children, TokenPosition.NONE) {} },
+                terminal(endTokenType)
+            )
+        ) { createNode(it[1].children.toList() as List<Node>, it[0].position) }
+
+        return oneOf(
+            listOf(
+                emptyIterableParser,
+                nonEmptyIterableParser
+            )
+        ).parse(input)
+    }
+
+}
\ No newline at end of file