English verb conjugation COULD TREPAN

Regular verb: trepan - trepanned - trepanned

Affirmation

Simple form

I could trepan
you could trepan
he could trepan
we could trepan
you could trepan
they could trepan

V-ing form

I could be trepanning
you could be trepanning
he could be trepanning
we could be trepanning
you could be trepanning
they could be trepanning

Perfect

I could have trepanned
you could have trepanned
he could have trepanned
we could have trepanned
you could have trepanned
they could have trepanned

V-ing perfect

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

Negation

Simple form

I could not trepan
you could not trepan
he could not trepan
we could not trepan
you could not trepan
they could not trepan

V-ing form

I could not be trepanning
you could not be trepanning
he could not be trepanning
we could not be trepanning
you could not be trepanning
they could not be trepanning

Perfect

I could not have trepanned
you could not have trepanned
he could not have trepanned
we could not have trepanned
you could not have trepanned
they could not have trepanned

V-ing perfect

I could not have been trepanning
you could not have been trepanning
he could not have been trepanning
we could not have been trepanning
you could not have been trepanning
they could not have been trepanning

Interrogative form

Simple form

could I trepan?
could you trepan?
could he trepan?
could we trepan?
could you trepan?
could they trepan?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

could I not trepan?
could you not trepan?
could he not trepan?
could we not trepan?
could you not trepan?
could they not trepan?

V-ing form

could I not be trepanning?
could you not be trepanning?
could he not be trepanning?
could we not be trepanning?
could you not be trepanning?
could they not be trepanning?

Perfect

could I not have trepanned?
could you not have trepanned?
could he not have trepanned?
could we not have trepanned?
could you not have trepanned?
could they not have trepanned?

V-ing perfect

could I not have been trepanning?
could you not have been trepanning?
could he not have been trepanning?
could we not have been trepanning?
could you not have been trepanning?
could they not have been trepanning?

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