Mine

index = 0
innerIndex = 0
list
item
itemCategory
roll

(loop (ls index (count list))
	(if (eq (item index list) itemCategory)
		(block (innerList)
			(setq innerList (item (add 1 index)))
			(loop (ls innerIndex (count innerList))
				(if (ls roll (item innerIndex innerList)
					(enhance item (item (add 1 innerIndex) innerList)
					
					;break the inner loop
					(setq innerIndex 50000)

				)
				(setq innerIndex (add 2 innerIndex))
			)
			;break the outter loop
			(setq index 50000)
		)
	)
	(setq index (add 2 index))
)