: '? WORD FIND ;
: '
    '? (?br) [ 4 , ] EXIT
    LIT< (wnf) FIND DROP EXECUTE
;
: ROLL
    DUP NOT IF EXIT THEN
    1+ DUP PICK          ( n val )
    SWAP 2 * (roll)      ( val )
    SWAP DROP
;
: 2OVER 3 PICK 3 PICK ;
: 2SWAP 3 ROLL 3 ROLL ;