collapseos/blk/410

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: '? 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 ;