8 = NONTERMINAL EQUALS prod (BAR prod)* SEMICOLON # Production
9 | INITIAL NONTERMINAL SEMICOLON # Initial
13 = regexps HASH TERMINAL (COMMA (SHIFT|REDUCE) TERMINAL)* # ProductionRhs
17 = (regexp (regexp | STAR | PLUS | OPTIONAL)*)? # Concatenation
21 = (TERMINAL | NONTERMINAL | SHIFT | REDUCE | INITIAL) # Terminal
22 | LPAREN regexps (BAR regexps)* RPAREN # Union