so5b ro5bwg qo5bw po5b oo5bwg

3x4bwg 2x4bw 1x4b 0x4bwg zx4bw

e73bw d73b c73bwg b73bw a73b

pg3b og3bwg ng3bw mg3b lg3bwg

0p2bwg zp2bw yp2b xp2bwg wp2bw