gtev ftevnl etevn dtev ctevnl

r2dvnl q2dvn p2dv o2dvnl n2dvn

2bdvn 1bdv 0bdvnl zbdvn ybdv

dlcv clcvnl blcvn alcv 9kcvnl

oubvnl nubvn mubv lubvnl kubvn