: pick ( xu..x0 u -- xu..x0 xu ) 1+ cells sp@ + @ ;
: bury ( xu..x1 x0 u -- x0..x1 ) 1+ cells sp@ + ! ;
cr 22 11 00 2 pick .s \ <4> 22 11 0 22
cr 77 2 bury .s \ <4> 22 11 77 22
cr 0 bury .s
OiBwaWNrICggeHUuLngwIHUgLS0geHUuLngwIHh1ICkgMSsgY2VsbHMgc3BAICsgQCA7CjogYnVyeSAoIHh1Li54MSB4MCB1IC0tIHgwLi54MSApIDErIGNlbGxzIHNwQCArICEgOwoKY3IgMjIgMTEgMDAgMiBwaWNrIC5zIFwgPDQ+IDIyIDExIDAgMjIKY3IgNzcgMiBidXJ5IC5zIFwgPDQ+IDIyIDExIDc3IDIyCmNyIDAgYnVyeSAucw==