sub r {5**y/VLD//.E.(3*/M/+2*/C|D/+/X|L/)}
sub r {1 .E.~-ord()*41%52%5>>y/VLD//}
sub r {5**y/VLD//.E.ord()x3%75%50%4}
sub r {1 .E.(72^ord)*5/7%5>>y/VLD//}
sub r {5**y/VLD//.E.(42^88*ord)%5}
sub r {1 .E.(3^77%ord)%7>>y/VLD//}