English verb conjugation
COULD INTERPERVADE

Regular verb: interpervade - interpervaded - interpervaded

Affirmation

Simple form	V-ing form
I could interpervade you could interpervade she could interpervade we could interpervade you could interpervade they could interpervade	I could be interpervading you could be interpervading she could be interpervading we could be interpervading you could be interpervading they could be interpervading
Perfect	V-ing perfect
I could have interpervaded you could have interpervaded she could have interpervaded we could have interpervaded you could have interpervaded they could have interpervaded	I could have been interpervading you could have been interpervading she could have been interpervading we could have been interpervading you could have been interpervading they could have been interpervading

Negation

Simple form	V-ing form
I couldn't interpervade you couldn't interpervade she couldn't interpervade we couldn't interpervade you couldn't interpervade they couldn't interpervade	I couldn't be interpervading you couldn't be interpervading she couldn't be interpervading we couldn't be interpervading you couldn't be interpervading they couldn't be interpervading
Perfect	V-ing perfect
I couldn't have interpervaded you couldn't have interpervaded she couldn't have interpervaded we couldn't have interpervaded you couldn't have interpervaded they couldn't have interpervaded	I couldn't have been interpervading you couldn't have been interpervading she couldn't have been interpervading we couldn't have been interpervading you couldn't have been interpervading they couldn't have been interpervading

Interrogative form

Simple form	V-ing form
could I interpervade? could you interpervade? could she interpervade? could we interpervade? could you interpervade? could they interpervade?	could I be interpervading? could you be interpervading? could she be interpervading? could we be interpervading? could you be interpervading? could they be interpervading?
Perfect	V-ing perfect
could I have interpervaded? could you have interpervaded? could she have interpervaded? could we have interpervaded? could you have interpervaded? could they have interpervaded?	could I have been interpervading? could you have been interpervading? could she have been interpervading? could we have been interpervading? could you have been interpervading? could they have been interpervading?

Interro-negative form

Simple form	V-ing form
couldn't I interpervade? couldn't you interpervade? couldn't she interpervade? couldn't we interpervade? couldn't you interpervade? couldn't they interpervade?	couldn't I be interpervading? couldn't you be interpervading? couldn't she be interpervading? couldn't we be interpervading? couldn't you be interpervading? couldn't they be interpervading?
Perfect	V-ing perfect
couldn't I have interpervaded? couldn't you have interpervaded? couldn't she have interpervaded? couldn't we have interpervaded? couldn't you have interpervaded? couldn't they have interpervaded?	couldn't I have been interpervading? couldn't you have been interpervading? couldn't she have been interpervading? couldn't we have been interpervading? couldn't you have been interpervading? couldn't they have been interpervading?