English verb conjugation COULD DERAIL

Regular verb: derail - derailed - derailed

Affirmation

Simple form

I could derail
you could derail
she could derail
we could derail
you could derail
they could derail

V-ing form

I could be derailing
you could be derailing
she could be derailing
we could be derailing
you could be derailing
they could be derailing

Perfect

I could have derailed
you could have derailed
she could have derailed
we could have derailed
you could have derailed
they could have derailed

V-ing perfect

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

Negation

Simple form

I could not derail
you could not derail
she could not derail
we could not derail
you could not derail
they could not derail

V-ing form

I could not be derailing
you could not be derailing
she could not be derailing
we could not be derailing
you could not be derailing
they could not be derailing

Perfect

I could not have derailed
you could not have derailed
she could not have derailed
we could not have derailed
you could not have derailed
they could not have derailed

V-ing perfect

I could not have been derailing
you could not have been derailing
she could not have been derailing
we could not have been derailing
you could not have been derailing
they could not have been derailing

Interrogative form

Simple form

could I derail?
could you derail?
could she derail?
could we derail?
could you derail?
could they derail?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

could I not derail?
could you not derail?
could she not derail?
could we not derail?
could you not derail?
could they not derail?

V-ing form

could I not be derailing?
could you not be derailing?
could she not be derailing?
could we not be derailing?
could you not be derailing?
could they not be derailing?

Perfect

could I not have derailed?
could you not have derailed?
could she not have derailed?
could we not have derailed?
could you not have derailed?
could they not have derailed?

V-ing perfect

could I not have been derailing?
could you not have been derailing?
could she not have been derailing?
could we not have been derailing?
could you not have been derailing?
could they not have been derailing?

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