Tripcode testing thread

ITT I will perform some saged experiments with tripcodes.

Here's the full range of characters usable in tripcodes.  Other characters either mirror (only the lowest 7 bits are checked in tripcodes) these, or expand (& -> &, etc.) to something you can already express with this.

char charset[] =
  "\x80\x81\x82\x83\x04\x05\x06\x07\x08\x89\x8a\x0b\x0c"
  "\x0d\x0e\x0f\x10\x11\x12\x13\x14\x15\x16\x17\x18\x19"
  "\x1a\x1b\x1c\x1d\x1e\x1f !\xa2#$%\xa6'()*+,-./012345"
  "6789:;\xbc=\xbe?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_`ab"
  "cdefghijklmnopqrstuvwxyz{|}~\x7e";