One Block, Two Blocks, Three Blocks in a Row

1 block, 2 blocks, 3 blocks in a row.
4 blocks, 5 blocks, 6 blocks – up they go.
7 blocks, 8 blocks, 9 blocks going high.
10 blocks, 11 blocks, 12 blocks- oh my!
Tumble! Rumble! Blocks in a jumble!