mbpq nbpqk obpqki pbpq qbpqk

b2pqk c2pqki d2pq e2pqk f2pqki

0sqqki 1sqq 2sqqk 3sqqki 4sqq

pjrq qjrqk rjrqki sjrq tjrqk

easqk fasqki gasq hasqk iasqki