function make_lex( $i = 0 ){
		$Lex = new LexBuilder( $i );
		foreach( $this->collect_symbols() as $symbols ){
			foreach( $symbols as $t => $s ){
				if( preg_match('/^\W/', $s, $r ) ){
					$Lex->define_literal( (string) $t );
				}
				else if( $Lex->defined($s) ){
				}
				else if( defined($s) ){
					$Lex->redefine( $s );
				}
				else {
					$Lex->define( $t );
				}
			}
		}
		return $Lex;
	}