English verb conjugation MUST BACKCROSS

Regular verb: backcross - backcrossed - backcrossed

Affirmation

Simple form

I must backcross
you must backcross
he must backcross
we must backcross
you must backcross
they must backcross

V-ing form

I must be backcrossing
you must be backcrossing
he must be backcrossing
we must be backcrossing
you must be backcrossing
they must be backcrossing

Perfect

I must have backcrossed
you must have backcrossed
he must have backcrossed
we must have backcrossed
you must have backcrossed
they must have backcrossed

V-ing perfect

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

Negation

Simple form

I must not backcross
you must not backcross
he must not backcross
we must not backcross
you must not backcross
they must not backcross

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

must I backcross?
must you backcross?
must he backcross?
must we backcross?
must you backcross?
must they backcross?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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