12bk 22bk4 32bk4m 42bk 52bk4

qtck4 rtck4m stck ttck4 utck4m

fkdk4m gkdk hkdk4 ikdk4m jkdk

4aek 5aek4 6aek4m 7aek 8aek4

t1ek4 u1ek4m v1ek w1ek4 x1ek4m