parseRuleSet(  // rule set in a list
 T("# Slightly modified from the rules on Wikipedia",
   "A -> apple", "B -> bag", "S -> .shop", "T -> the",
   "the shop -> my brother", "a never used -> .terminating rule")) :
markov("I bought a B of As from T S.",_).println();

parseRuleSet("# BNF Syntax testing rules", "A -> apple",
   "WWWW -> with", "Bgage -> ->.*", "B -> bag", "->.* -> money",
   "W -> WW", "S -> .shop", "T -> the",
   "the shop -> my brother", "a never used -> .terminating rule") :
markov("I bought a B of As W my Bgage from T S.",_).println();