English verb conjugation MUST CHAIR

Regular verb: chair - chaired - chaired

Affirmation

Simple form

I must chair
you must chair
he must chair
we must chair
you must chair
they must chair

V-ing form

I must be chairing
you must be chairing
he must be chairing
we must be chairing
you must be chairing
they must be chairing

Perfect

I must have chaired
you must have chaired
he must have chaired
we must have chaired
you must have chaired
they must have chaired

V-ing perfect

I must have been chairing
you must have been chairing
he must have been chairing
we must have been chairing
you must have been chairing
they must have been chairing

Negation

Simple form

I must not chair
you must not chair
he must not chair
we must not chair
you must not chair
they must not chair

V-ing form

I must not be chairing
you must not be chairing
he must not be chairing
we must not be chairing
you must not be chairing
they must not be chairing

Perfect

I must not have chaired
you must not have chaired
he must not have chaired
we must not have chaired
you must not have chaired
they must not have chaired

V-ing perfect

I must not have been chairing
you must not have been chairing
he must not have been chairing
we must not have been chairing
you must not have been chairing
they must not have been chairing

Interrogative form

Simple form

must I chair?
must you chair?
must he chair?
must we chair?
must you chair?
must they chair?

V-ing form

must I be chairing?
must you be chairing?
must he be chairing?
must we be chairing?
must you be chairing?
must they be chairing?

Perfect

must I have chaired?
must you have chaired?
must he have chaired?
must we have chaired?
must you have chaired?
must they have chaired?

V-ing perfect

must I have been chairing?
must you have been chairing?
must he have been chairing?
must we have been chairing?
must you have been chairing?
must they have been chairing?

Interro-negative form

Simple form

must I not chair?
must you not chair?
must he not chair?
must we not chair?
must you not chair?
must they not chair?

V-ing form

must I not be chairing?
must you not be chairing?
must he not be chairing?
must we not be chairing?
must you not be chairing?
must they not be chairing?

Perfect

must I not have chaired?
must you not have chaired?
must he not have chaired?
must we not have chaired?
must you not have chaired?
must they not have chaired?

V-ing perfect

must I not have been chairing?
must you not have been chairing?
must he not have been chairing?
must we not have been chairing?
must you not have been chairing?
must they not have been chairing?

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