English verb conjugation COULD NIELLO

Regular verb: niello - nielloed - nielloed

Affirmation

Simple form

I could niello
you could niello
she could niello
we could niello
you could niello
they could niello

V-ing form

I could be nielloing
you could be nielloing
she could be nielloing
we could be nielloing
you could be nielloing
they could be nielloing

Perfect

I could have nielloed
you could have nielloed
she could have nielloed
we could have nielloed
you could have nielloed
they could have nielloed

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I niello?
could you niello?
could she niello?
could we niello?
could you niello?
could they niello?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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