[$$$$'.=\',=|\';=|\':=|~[^s;!\,]?]s:              {recursive reading}
[s;!$'.=~[,^f;!]?]r:                              {reverse words}
[[$$$$'.=\',=|\';=|\':=|~][,^]#$'.=~[,^r;!]?]f:   {forward words}
^f;!,                                             {start}