main
(w
,y
,b
,q
){scanf("%d %d",&w
,&y
);for(b
=0;b
<w
;b
++){for(q
=0;q
<y
;q
++)printf("d f%d/du u%d%s",b
,q
,q
<y
-1?", ":"");printf("\n");}}
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