Model: actuar
Auxiliary: haber
Other forms: situar/situarse
Verbs ending in-uar (except for verbs in -cuar that also have regular conjugation forms, verbs that follow the conjugation pattern of averiguar and apropincuar that is regular) follow the conjugation pattern of regular verbs in -ar but have alternation in stem "u" -> "ú" in 1st, 2nd, 3rd pers.sing. and 3rd pers.pl. in imperative, indicative and subjunctive present: actuar / actúa
Presente
Futuro
Pretérito imperfecto
Pretérito perfecto compuesto
Pretérito pluscuamperfecto
Pretérito anterior
Futuro perfecto
Condicional perfecto
Condicional
Pretérito perfecto simple
Pretérito imperfecto (2)
Pretérito pluscuamperfecto (2)
Pretérito perfecto