English verb conjugation COULD STAGNATE

Regular verb: stagnate - stagnated - stagnated

Affirmation

Simple form

I could stagnate
you could stagnate
she could stagnate
we could stagnate
you could stagnate
they could stagnate

V-ing form

I could be stagnating
you could be stagnating
she could be stagnating
we could be stagnating
you could be stagnating
they could be stagnating

Perfect

I could have stagnated
you could have stagnated
she could have stagnated
we could have stagnated
you could have stagnated
they could have stagnated

V-ing perfect

I could have been stagnating
you could have been stagnating
she could have been stagnating
we could have been stagnating
you could have been stagnating
they could have been stagnating

Negation

Simple form

I couldn't stagnate
you couldn't stagnate
she couldn't stagnate
we couldn't stagnate
you couldn't stagnate
they couldn't stagnate

V-ing form

I couldn't be stagnating
you couldn't be stagnating
she couldn't be stagnating
we couldn't be stagnating
you couldn't be stagnating
they couldn't be stagnating

Perfect

I couldn't have stagnated
you couldn't have stagnated
she couldn't have stagnated
we couldn't have stagnated
you couldn't have stagnated
they couldn't have stagnated

V-ing perfect

I couldn't have been stagnating
you couldn't have been stagnating
she couldn't have been stagnating
we couldn't have been stagnating
you couldn't have been stagnating
they couldn't have been stagnating

Interrogative form

Simple form

could I stagnate?
could you stagnate?
could she stagnate?
could we stagnate?
could you stagnate?
could they stagnate?

V-ing form

could I be stagnating?
could you be stagnating?
could she be stagnating?
could we be stagnating?
could you be stagnating?
could they be stagnating?

Perfect

could I have stagnated?
could you have stagnated?
could she have stagnated?
could we have stagnated?
could you have stagnated?
could they have stagnated?

V-ing perfect

could I have been stagnating?
could you have been stagnating?
could she have been stagnating?
could we have been stagnating?
could you have been stagnating?
could they have been stagnating?

Interro-negative form

Simple form

couldn't I stagnate?
couldn't you stagnate?
couldn't she stagnate?
couldn't we stagnate?
couldn't you stagnate?
couldn't they stagnate?

V-ing form

couldn't I be stagnating?
couldn't you be stagnating?
couldn't she be stagnating?
couldn't we be stagnating?
couldn't you be stagnating?
couldn't they be stagnating?

Perfect

couldn't I have stagnated?
couldn't you have stagnated?
couldn't she have stagnated?
couldn't we have stagnated?
couldn't you have stagnated?
couldn't they have stagnated?

V-ing perfect

couldn't I have been stagnating?
couldn't you have been stagnating?
couldn't she have been stagnating?
couldn't we have been stagnating?
couldn't you have been stagnating?
couldn't they have been stagnating?

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