At the café this morning there was a discussion about which verbs take auxiliary êt’in perfect tense. There isn’t a standard list (one suspects because authorities have disagreed and so, rather than cause offence, people have preferred not to try and lay down the law on this question). So here’s a suggested list based on those verbs on which there seems to be consensus:
Verbs taking auxiliary êt’ in perfect tense
1 all reflexive verbs
2 v’nînand derivatives èrv’nîn, dêv’nîn, rav’nîn(?) but not conv’nîn
3 aller, èraller, s’n aller (however verb êt’ is frequently used instead of aller in the perfect: j’ai ‘té rather than j’sis allé)
4 parti(however s’n aller is more frequently used)
5 arrivermay take either auxiliary aver or auxiliary êt’
Other verbs may be found in literary texts which are conjugated with êt’, perhaps in a gallicised style influenced by cognate French verbs taking être.