w3bgc x3bgc4 y3bg z3bgc 03bgc4

lucgc4 mucg nucgc oucgc4 pucg

aldg bldgc cldgc4 dldg eldgc

zbegc 0begc4 1beg 2begc 3begc4

o2egc4 p2eg q2egc r2egc4 s2eg