SQL Server 2012 :: Splitting Column Values In Multiple Columns And Assigning It To Row

How do I write a query using the split function for the following requirement.I have a table in the following way

Identity Name Col1 Col2 Col3
1 Test1 1,2,3 200,300,400 3,4,6
2 Test2 3,4,5 300,455,600 2,3,8

I want an output in the following format

Identity Name Col1 Col2 Col3
1 Test1 1 200 3
1 Test1 2 300 4
1 Test1 3 400 6
2 Test2 3 300 2
2 Test2 4 455 3
2 Test2 5 600 8

If you see the data, first element in col1 is matched to first element in col2 and 3 after splitting the string.