English verb conjugation MUST DISTINGUISH

Regular verb: distinguish - distinguished - distinguished

Affirmation

Simple form

I must distinguish
you must distinguish
he must distinguish
we must distinguish
you must distinguish
they must distinguish

V-ing form

I must be distinguishing
you must be distinguishing
he must be distinguishing
we must be distinguishing
you must be distinguishing
they must be distinguishing

Perfect

I must have distinguished
you must have distinguished
he must have distinguished
we must have distinguished
you must have distinguished
they must have distinguished

V-ing perfect

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

Negation

Simple form

I must not distinguish
you must not distinguish
he must not distinguish
we must not distinguish
you must not distinguish
they must not distinguish

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

must I distinguish?
must you distinguish?
must he distinguish?
must we distinguish?
must you distinguish?
must they distinguish?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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