English verb conjugation
MUST REINFORCE

Regular verb: reinforce - reinforced - reinforced

Affirmation

Simple form	V-ing form
I must reinforce you must reinforce he must reinforce we must reinforce you must reinforce they must reinforce	I must be reinforcing you must be reinforcing he must be reinforcing we must be reinforcing you must be reinforcing they must be reinforcing
Perfect	V-ing perfect
I must have reinforced you must have reinforced he must have reinforced we must have reinforced you must have reinforced they must have reinforced	I must have been reinforcing you must have been reinforcing he must have been reinforcing we must have been reinforcing you must have been reinforcing they must have been reinforcing

Negation

Simple form	V-ing form
I must not reinforce you must not reinforce he must not reinforce we must not reinforce you must not reinforce they must not reinforce	I must not be reinforcing you must not be reinforcing he must not be reinforcing we must not be reinforcing you must not be reinforcing they must not be reinforcing
Perfect	V-ing perfect
I must not have reinforced you must not have reinforced he must not have reinforced we must not have reinforced you must not have reinforced they must not have reinforced	I must not have been reinforcing you must not have been reinforcing he must not have been reinforcing we must not have been reinforcing you must not have been reinforcing they must not have been reinforcing

Interrogative form

Simple form	V-ing form
must I reinforce? must you reinforce? must he reinforce? must we reinforce? must you reinforce? must they reinforce?	must I be reinforcing? must you be reinforcing? must he be reinforcing? must we be reinforcing? must you be reinforcing? must they be reinforcing?
Perfect	V-ing perfect
must I have reinforced? must you have reinforced? must he have reinforced? must we have reinforced? must you have reinforced? must they have reinforced?	must I have been reinforcing? must you have been reinforcing? must he have been reinforcing? must we have been reinforcing? must you have been reinforcing? must they have been reinforcing?

Interro-negative form

Simple form	V-ing form
must I not reinforce? must you not reinforce? must he not reinforce? must we not reinforce? must you not reinforce? must they not reinforce?	must I not be reinforcing? must you not be reinforcing? must he not be reinforcing? must we not be reinforcing? must you not be reinforcing? must they not be reinforcing?
Perfect	V-ing perfect
must I not have reinforced? must you not have reinforced? must he not have reinforced? must we not have reinforced? must you not have reinforced? must they not have reinforced?	must I not have been reinforcing? must you not have been reinforcing? must he not have been reinforcing? must we not have been reinforcing? must you not have been reinforcing? must they not have been reinforcing?