Rule reminder

Some Italian verbs change meaning depending on whether they use 'essere' (intransitive use) or 'avere' (transitive use). Key pairs: finire — ho finito (I finished something) vs. è finito (it has ended/run out); salire — ho salito (I climbed something) vs. sono salito (I went up); aumentare — ha aumentato (raised something) vs. è aumentato (went up by itself).