English verb conjugation MUST COUNTERCHECK

Regular verb: countercheck - counterchecked - counterchecked

Affirmation

Simple form

I must countercheck
you must countercheck
he must countercheck
we must countercheck
you must countercheck
they must countercheck

V-ing form

I must be counterchecking
you must be counterchecking
he must be counterchecking
we must be counterchecking
you must be counterchecking
they must be counterchecking

Perfect

I must have counterchecked
you must have counterchecked
he must have counterchecked
we must have counterchecked
you must have counterchecked
they must have counterchecked

V-ing perfect

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

Negation

Simple form

I must not countercheck
you must not countercheck
he must not countercheck
we must not countercheck
you must not countercheck
they must not countercheck

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

must I countercheck?
must you countercheck?
must he countercheck?
must we countercheck?
must you countercheck?
must they countercheck?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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