Use the base stem 'perç-' replacing the final '-cevoir' with 'ç' in the infinitive percevoir and follow the '-us' pattern (found at the top of the page).
Use the base stem 'éch-' dropping the final '-oir' from the infinitive échoir, follow the '-us' pattern (found at the top of the page) and only conjugate the il form.
Endings' pattern:
, , , , ,
Verbs:
échoir
ÉCHOIR
J'
> -
Tu
> -
Il
>
Nous
> -
Vous
> -
Ils
> -
Only il, irreg. [for: il] [-us endings]
Description:
Use the base stem 'fall-' dropping the final '-oir' from the infinitive falloir, follow the '-us' pattern (found at the top of the page) and only conjugate the il form.
Endings' pattern:
, , , , ,
FALLOIR
to have to (necessity)
Je
> -
Tu
> -
Il
>
Nous
> -
Vous
> -
Ils
> -
PLEUVOIR
to have to (necessity)
Je
> -
Tu
> -
Il
>
Nous
> -
Vous
> -
Ils
> -
-ENIR [-ins endings], only il
Description:
Use the base stem 'adv-' dropping the final '-enir' from the infinitive advenir, follow the '-ins' pattern (found at the top of the page) and only conjugate the il form.