English verb conjugation COULD NIGGLE

Regular verb: niggle - niggled - niggled

Affirmation

Simple form

I could niggle
you could niggle
she could niggle
we could niggle
you could niggle
they could niggle

V-ing form

I could be niggling
you could be niggling
she could be niggling
we could be niggling
you could be niggling
they could be niggling

Perfect

I could have niggled
you could have niggled
she could have niggled
we could have niggled
you could have niggled
they could have niggled

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I niggle?
could you niggle?
could she niggle?
could we niggle?
could you niggle?
could they niggle?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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