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Generally speaking, if a verb has reflexive endings, it's aspectual partner also has reflexive endings. There are four verbs that are atypical in that their imperfective is reflexived, while their perfective is non-reflexive. They are:
| Meaning | Imperfective | Perfective |
| to sit down | садиться | сесть |
| to lie down | ложиться | лечь |
| to become | становиться | стать |
| to burst | лопаться | лопнуть |