@
safe pure nothrow
static if(!((c == 'x') || (c == 'r') || (c == 'u') || (c == 's')))
static if(!((c == 'y') || (c == 'g') || (c == 'v') || (c == 't')))
static if(!((c == 'z') || (c == 'b') || (c == 'p')))
static if((c == 'w') || (c == 'a') || (c == 'q'))