jduc iducgb hducg gduc fducgb

umtcgb tmtcg smtc rmtcgb qmtcg

5vscg 4vsc 3vscgb 2vscg 1vsc

g5rc f5rcgb e5rcg d5rc c5rcgb

rercgb qercg perc oercgb nercg