10' x 10' 10' x 12' 10' x 14' 10' x 16' 10' x 18' 10' x 20' 12' x 12' 12' x 14' 12' x 16' 12' x 18' 12' x 20' 12' x 24' 14' x 14' 14' x 16' 14' x 18' 14' x 20' 14' x 24' 14' x 28' 16' x 16' 16' x 20' 16' x 24' 16' x 28' 20' x 20' 20' x 24' 20' x 28' 20' x 32' 20' x 36' 20' x 40'