English verb conjugation MUST GAS

Regular verb: gas - gassed - gassed

Affirmation

Simple form

I must gas
you must gas
he must gas
we must gas
you must gas
they must gas

V-ing form

I must be gassing
you must be gassing
he must be gassing
we must be gassing
you must be gassing
they must be gassing

Perfect

I must have gassed
you must have gassed
he must have gassed
we must have gassed
you must have gassed
they must have gassed

V-ing perfect

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

Negation

Simple form

I must not gas
you must not gas
he must not gas
we must not gas
you must not gas
they must not gas

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

must I gas?
must you gas?
must he gas?
must we gas?
must you gas?
must they gas?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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