5itbg 4itb 3itbg1 2itbg 1itb
gssb fssbg1 essbg dssb cssbg1
r1rbg1 q1rbg p1rb o1rbg1 n1rbg
2arbg 1arb 0arbg1 zarbg yarb
dkqb ckqbg1 bkqbg akqb 9jqbg1