+(defknown %adjoin (t list) list (explicit-check foldable flushable))
+(defknown %adjoin-key (t list function) list (explicit-check foldable flushable call))
+(defknown %assoc (t list) list (explicit-check foldable flushable))
+(defknown %assoc-key (t list function) list (explicit-check foldable flushable call))
+(defknown %member (t list) list (explicit-check foldable flushable))
+(defknown %member-key (t list function) list (explicit-check foldable flushable call))
+(defknown %rassoc (t list) list (explicit-check foldable flushable))
+(defknown %rassoc-key (t list function) list (explicit-check foldable flushable call))
+