bkqpg ckqpgb dkqp ekqpg fkqpgb

0arpgb 1arp 2arpg 3arpgb 4arp

p1rp q1rpg r1rpgb s1rp t1rpg

esspg fsspgb gssp hsspg isspgb

3itpgb 4itp 5itpg 6itpgb 7itp