Original instructions are irrelevant now. Just watch the machine do the magic. Turbo mode is for the impatient :-)
Awesome finite-state machine data by Hardmath123. This parses the FSM and finds every match (with recursion limit to prevent endless trailing matches). I was gonna post it yesterday because I knew the solution, but Scratch proved again how difficult it was to use a new variable for each recursive function call... which I solved just now...