bl7dr al7d 9k7drn 8k7dr 7k7d
mu6d lu6drn ku6dr ju6d iu6drn
x35drn w35dr v35d u35drn t35dr
8c5dr 7c5d 6c5drn 5c5dr 4c5d
jm4d im4drn hm4dr gm4d fm4drn