How to define 2 varinats for a single item .....?

hi chandra

i know

but need to assign two variants for a particular item

eg:

  1. Item id = 1,Item description = item1, Size = 20, Color = Black

  2. Item id = 1, Item description = item1, Size = 22, Color = Black

  3. Item id = 1, Item description = item1, Size = 24, Color = Black

  4. Item id = 1, Item description = item1, Size = 26, Color = Black

  5. Item id = 1, Item description = item1, Size = 20, Color = White

  6. Item id = 1, Item description = item1, Size = 22, Color = White

  7. Item id = 1, Item description = item1, Size = 24, Color = White

  8. Item id = 1, Item description = item1, Size = 26, Color = White