bt2b4 at2b 9s2b4i 8s2b4 7s2b

m21b l21b4i k21b4 j21b i21b4i

xb1b4i wb1b4 vb1b ub1b4i tb1b4

8k0b4 7k0b 6k0b4i 5k0b4 4k0b

juzb iuzb4i huzb4 guzb fuzb4i