English verb conjugation
COULD REGROUP

Regular verb: regroup - regrouped - regrouped

Affirmation

Simple form	V-ing form
I could regroup you could regroup she could regroup we could regroup you could regroup they could regroup	I could be regrouping you could be regrouping she could be regrouping we could be regrouping you could be regrouping they could be regrouping
Perfect	V-ing perfect
I could have regrouped you could have regrouped she could have regrouped we could have regrouped you could have regrouped they could have regrouped	I could have been regrouping you could have been regrouping she could have been regrouping we could have been regrouping you could have been regrouping they could have been regrouping

Negation

Simple form	V-ing form
I couldn't regroup you couldn't regroup she couldn't regroup we couldn't regroup you couldn't regroup they couldn't regroup	I couldn't be regrouping you couldn't be regrouping she couldn't be regrouping we couldn't be regrouping you couldn't be regrouping they couldn't be regrouping
Perfect	V-ing perfect
I couldn't have regrouped you couldn't have regrouped she couldn't have regrouped we couldn't have regrouped you couldn't have regrouped they couldn't have regrouped	I couldn't have been regrouping you couldn't have been regrouping she couldn't have been regrouping we couldn't have been regrouping you couldn't have been regrouping they couldn't have been regrouping

Interrogative form

Simple form	V-ing form
could I regroup? could you regroup? could she regroup? could we regroup? could you regroup? could they regroup?	could I be regrouping? could you be regrouping? could she be regrouping? could we be regrouping? could you be regrouping? could they be regrouping?
Perfect	V-ing perfect
could I have regrouped? could you have regrouped? could she have regrouped? could we have regrouped? could you have regrouped? could they have regrouped?	could I have been regrouping? could you have been regrouping? could she have been regrouping? could we have been regrouping? could you have been regrouping? could they have been regrouping?

Interro-negative form

Simple form	V-ing form
couldn't I regroup? couldn't you regroup? couldn't she regroup? couldn't we regroup? couldn't you regroup? couldn't they regroup?	couldn't I be regrouping? couldn't you be regrouping? couldn't she be regrouping? couldn't we be regrouping? couldn't you be regrouping? couldn't they be regrouping?
Perfect	V-ing perfect
couldn't I have regrouped? couldn't you have regrouped? couldn't she have regrouped? couldn't we have regrouped? couldn't you have regrouped? couldn't they have regrouped?	couldn't I have been regrouping? couldn't you have been regrouping? couldn't she have been regrouping? couldn't we have been regrouping? couldn't you have been regrouping? couldn't they have been regrouping?