make-sequence copy-seq map concatenate subseq elt length count count-if count-if-not find find-if find-if-not position position-if position-if-not remove delete remove-if delete-if remove-if-not delete-if-not substitute nsubstitute substitute-if nsubstitute-if substitute-if-not nsubstitute-if-not every some notevery notany fill map-into merge mismatch reduce remove-duplicates delete-duplicates replace reverse nreverse search sort stable-sort