English verb conjugation MUST FOIL

Regular verb: foil - foiled - foiled

Affirmation

Simple form

I must foil
you must foil
she must foil
we must foil
you must foil
they must foil

V-ing form

I must be foiling
you must be foiling
she must be foiling
we must be foiling
you must be foiling
they must be foiling

Perfect

I must have foiled
you must have foiled
she must have foiled
we must have foiled
you must have foiled
they must have foiled

V-ing perfect

I must have been foiling
you must have been foiling
she must have been foiling
we must have been foiling
you must have been foiling
they must have been foiling

Negation

Simple form

I must not foil
you must not foil
she must not foil
we must not foil
you must not foil
they must not foil

V-ing form

I must not be foiling
you must not be foiling
she must not be foiling
we must not be foiling
you must not be foiling
they must not be foiling

Perfect

I must not have foiled
you must not have foiled
she must not have foiled
we must not have foiled
you must not have foiled
they must not have foiled

V-ing perfect

I must not have been foiling
you must not have been foiling
she must not have been foiling
we must not have been foiling
you must not have been foiling
they must not have been foiling

Interrogative form

Simple form

must I foil?
must you foil?
must she foil?
must we foil?
must you foil?
must they foil?

V-ing form

must I be foiling?
must you be foiling?
must she be foiling?
must we be foiling?
must you be foiling?
must they be foiling?

Perfect

must I have foiled?
must you have foiled?
must she have foiled?
must we have foiled?
must you have foiled?
must they have foiled?

V-ing perfect

must I have been foiling?
must you have been foiling?
must she have been foiling?
must we have been foiling?
must you have been foiling?
must they have been foiling?

Interro-negative form

Simple form

must I not foil?
must you not foil?
must she not foil?
must we not foil?
must you not foil?
must they not foil?

V-ing form

must I not be foiling?
must you not be foiling?
must she not be foiling?
must we not be foiling?
must you not be foiling?
must they not be foiling?

Perfect

must I not have foiled?
must you not have foiled?
must she not have foiled?
must we not have foiled?
must you not have foiled?
must they not have foiled?

V-ing perfect

must I not have been foiling?
must you not have been foiling?
must she not have been foiling?
must we not have been foiling?
must you not have been foiling?
must they not have been foiling?

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