<INITIAL> "if" => (Tokens.IF (yypos, yypos + size yytext));
<INITIAL> "then" => (Tokens.THEN (yypos, yypos + size yytext));
<INITIAL> "else" => (Tokens.ELSE (yypos, yypos + size yytext));
<INITIAL> "if" => (Tokens.IF (yypos, yypos + size yytext));
<INITIAL> "then" => (Tokens.THEN (yypos, yypos + size yytext));
<INITIAL> "else" => (Tokens.ELSE (yypos, yypos + size yytext));