p6.p6

    rule statement_control:sym<without> {
        $<sym>='without' <.kok> {}
        <xblock(1)> # 1 means we're not parsing `unless` 
        [ <!before [els[e|if]|orwith]» >
            || $<wrong-keyword>=[els[e|if]|orwith]»
                <.typed_panic: 'X::Syntax::WithoutElse',
                    keyword => ~$<wrong-keyword>,
                >
        ]
    }