English verb conjugation COULD PUZZLE

Regular verb: puzzle - puzzled - puzzled

Affirmation

Simple form

I could puzzle
you could puzzle
he could puzzle
we could puzzle
you could puzzle
they could puzzle

V-ing form

I could be puzzling
you could be puzzling
he could be puzzling
we could be puzzling
you could be puzzling
they could be puzzling

Perfect

I could have puzzled
you could have puzzled
he could have puzzled
we could have puzzled
you could have puzzled
they could have puzzled

V-ing perfect

I could have been puzzling
you could have been puzzling
he could have been puzzling
we could have been puzzling
you could have been puzzling
they could have been puzzling

Negation

Simple form

I couldn't puzzle
you couldn't puzzle
he couldn't puzzle
we couldn't puzzle
you couldn't puzzle
they couldn't puzzle

V-ing form

I couldn't be puzzling
you couldn't be puzzling
he couldn't be puzzling
we couldn't be puzzling
you couldn't be puzzling
they couldn't be puzzling

Perfect

I couldn't have puzzled
you couldn't have puzzled
he couldn't have puzzled
we couldn't have puzzled
you couldn't have puzzled
they couldn't have puzzled

V-ing perfect

I couldn't have been puzzling
you couldn't have been puzzling
he couldn't have been puzzling
we couldn't have been puzzling
you couldn't have been puzzling
they couldn't have been puzzling

Interrogative form

Simple form

could I puzzle?
could you puzzle?
could he puzzle?
could we puzzle?
could you puzzle?
could they puzzle?

V-ing form

could I be puzzling?
could you be puzzling?
could he be puzzling?
could we be puzzling?
could you be puzzling?
could they be puzzling?

Perfect

could I have puzzled?
could you have puzzled?
could he have puzzled?
could we have puzzled?
could you have puzzled?
could they have puzzled?

V-ing perfect

could I have been puzzling?
could you have been puzzling?
could he have been puzzling?
could we have been puzzling?
could you have been puzzling?
could they have been puzzling?

Interro-negative form

Simple form

couldn't I puzzle?
couldn't you puzzle?
couldn't he puzzle?
couldn't we puzzle?
couldn't you puzzle?
couldn't they puzzle?

V-ing form

couldn't I be puzzling?
couldn't you be puzzling?
couldn't he be puzzling?
couldn't we be puzzling?
couldn't you be puzzling?
couldn't they be puzzling?

Perfect

couldn't I have puzzled?
couldn't you have puzzled?
couldn't he have puzzled?
couldn't we have puzzled?
couldn't you have puzzled?
couldn't they have puzzled?

V-ing perfect

couldn't I have been puzzling?
couldn't you have been puzzling?
couldn't he have been puzzling?
couldn't we have been puzzling?
couldn't you have been puzzling?
couldn't they have been puzzling?

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