English verb conjugation
MUST CROSSBREED

Irregular verb: crossbreed - crossbred - crossbred

Affirmation

Simple form	V-ing form
I must crossbreed you must crossbreed he must crossbreed we must crossbreed you must crossbreed they must crossbreed	I must be crossbreeding you must be crossbreeding he must be crossbreeding we must be crossbreeding you must be crossbreeding they must be crossbreeding
Perfect	V-ing perfect
I must have crossbred you must have crossbred he must have crossbred we must have crossbred you must have crossbred they must have crossbred	I must have been crossbreeding you must have been crossbreeding he must have been crossbreeding we must have been crossbreeding you must have been crossbreeding they must have been crossbreeding

Negation

Simple form	V-ing form
I must not crossbreed you must not crossbreed he must not crossbreed we must not crossbreed you must not crossbreed they must not crossbreed	I must not be crossbreeding you must not be crossbreeding he must not be crossbreeding we must not be crossbreeding you must not be crossbreeding they must not be crossbreeding
Perfect	V-ing perfect
I must not have crossbred you must not have crossbred he must not have crossbred we must not have crossbred you must not have crossbred they must not have crossbred	I must not have been crossbreeding you must not have been crossbreeding he must not have been crossbreeding we must not have been crossbreeding you must not have been crossbreeding they must not have been crossbreeding

Interrogative form

Simple form	V-ing form
must I crossbreed? must you crossbreed? must he crossbreed? must we crossbreed? must you crossbreed? must they crossbreed?	must I be crossbreeding? must you be crossbreeding? must he be crossbreeding? must we be crossbreeding? must you be crossbreeding? must they be crossbreeding?
Perfect	V-ing perfect
must I have crossbred? must you have crossbred? must he have crossbred? must we have crossbred? must you have crossbred? must they have crossbred?	must I have been crossbreeding? must you have been crossbreeding? must he have been crossbreeding? must we have been crossbreeding? must you have been crossbreeding? must they have been crossbreeding?

Interro-negative form

Simple form	V-ing form
must I not crossbreed? must you not crossbreed? must he not crossbreed? must we not crossbreed? must you not crossbreed? must they not crossbreed?	must I not be crossbreeding? must you not be crossbreeding? must he not be crossbreeding? must we not be crossbreeding? must you not be crossbreeding? must they not be crossbreeding?
Perfect	V-ing perfect
must I not have crossbred? must you not have crossbred? must he not have crossbred? must we not have crossbred? must you not have crossbred? must they not have crossbred?	must I not have been crossbreeding? must you not have been crossbreeding? must he not have been crossbreeding? must we not have been crossbreeding? must you not have been crossbreeding? must they not have been crossbreeding?