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