diff --git a/index.js b/index.js
index 9b7b620..910ba38 100644
--- a/index.js
+++ b/index.js
@@ -12,8 +12,6 @@ rows = [
     ["b","3"],
 ];
 
-table = new Table("Root", rows);
+table = new Table("Root", rows, [1]);
 table.PivotTree([0, 1]);
-table.ItrLeaves( inLeaf => console.log(inLeaf) );
-
-console.log(table, leaves);
\ No newline at end of file
+table.ItrLeaves( inLeaf => console.log(inLeaf) );
\ No newline at end of file
diff --git a/table.ts b/table.ts
index 1f3f196..674af9f 100644
--- a/table.ts
+++ b/table.ts
@@ -8,9 +8,9 @@ export class Sum
     FromChildren: number;
     FromOutside: number;
 
-    constructor()
+    constructor(inIndex: number)
     {
-        this.ColumnIndex = 0;
+        this.ColumnIndex = inIndex;
     }
 }
 
@@ -18,52 +18,49 @@ export class Table
 {
     Name: string;
     Rows: Array<Array<string>>;
+    Columns: Array<Sum>;
     Parent?: Table; 
     Children: Array<Table>;
 
-    constructor(inName: string, inRows: Array<Array<string>>)
+    constructor(inName: string, inRows: Array<Array<string>>, inColumns: Array<number>)
     {
         this.Name = inName;
         this.Rows = inRows;
         this.Parent = null;
         this.Children = [];
+        this.Columns = inColumns.map( (inIndex: number) => new Sum(inIndex) );
     }
 
-    Pivot(inColumn: number)
+    Pivot(inColumnPivot: number)
     {
         var cell: string;
         var child: Table;
-        var context: Table;
 
-        context = this;
         this.Rows.forEach((inRow: Array<string>)=>
         {
-            cell = inRow[inColumn];
+            cell = inRow[inColumnPivot];
             child = this.Children.find( (inChild: Table) => inChild.Name == cell );
             if(!child)
             {
-                child = new Table(cell, []);
-                child.Parent = context;
-                context.Children.push(child);
+                child = new Table(cell, [], this.Columns.map( (inColumn: Sum) => inColumn.ColumnIndex ));
+                child.Parent = this;
+                this.Children.push(child);
             }
             child.Rows.push(inRow);
         });
         this.Rows = [];
     }
-    PivotTree(inColumns: Array<number>)
+    PivotTree(inColumnsPivot: Array<number>)
     {
-        var columns: Array<number>;
+        var pivotsRemaining: Array<number>;
 
-        if(inColumns.length == 0)
+        if(inColumnsPivot.length == 0)
         {
             return;
         }
-        columns = [...inColumns];
-        this.Pivot(columns.shift());
-        this.Children.forEach( (inChild: Table) =>
-        {
-            inChild.PivotTree(columns);
-        });
+        pivotsRemaining = [...inColumnsPivot];
+        this.Pivot(pivotsRemaining.shift());
+        this.Children.forEach( (inChild: Table) => inChild.PivotTree(pivotsRemaining) );
     }
 
     ItrParents(inFunction: Function)
@@ -93,4 +90,11 @@ export class Table
             this.Children.forEach( (inChild: Table) => inChild.ItrLeaves(inFunction) );
         }
     }
-}
\ No newline at end of file
+}
+
+export const Iterators = {
+    SumRows: (inTable: Table) =>
+    {
+        
+    }
+};
\ No newline at end of file