# Prepend z appropriately to occurrences of s, in order to make fun of bezrend s,^s,zs,g s,^S\([a-z]\),Zs\1,g s,^s,ZS,g s,\([^zZ]\)s,\1zs,g s,\([^zZ]\)S\([a-z]\),\1Zs\2,g s,\([^zZ]\)S,\1ZS,g