English verb conjugation
MUST REINFORCE

Regular verb: reinforce - reinforced - reinforced

Affirmation

Simple form	V-ing form
I must reinforce you must reinforce she must reinforce we must reinforce you must reinforce they must reinforce	I must be reinforcing you must be reinforcing she 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 she 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 she 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 mustn't reinforce you mustn't reinforce she mustn't reinforce we mustn't reinforce you mustn't reinforce they mustn't reinforce	I mustn't be reinforcing you mustn't be reinforcing she mustn't be reinforcing we mustn't be reinforcing you mustn't be reinforcing they mustn't be reinforcing
Perfect	V-ing perfect
I mustn't have reinforced you mustn't have reinforced she mustn't have reinforced we mustn't have reinforced you mustn't have reinforced they mustn't have reinforced	I mustn't have been reinforcing you mustn't have been reinforcing she mustn't have been reinforcing we mustn't have been reinforcing you mustn't have been reinforcing they mustn't have been reinforcing

Interrogative form

Simple form	V-ing form
must I reinforce? must you reinforce? must she reinforce? must we reinforce? must you reinforce? must they reinforce?	must I be reinforcing? must you be reinforcing? must she 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 she 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 she 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
mustn't I reinforce? mustn't you reinforce? mustn't she reinforce? mustn't we reinforce? mustn't you reinforce? mustn't they reinforce?	mustn't I be reinforcing? mustn't you be reinforcing? mustn't she be reinforcing? mustn't we be reinforcing? mustn't you be reinforcing? mustn't they be reinforcing?
Perfect	V-ing perfect
mustn't I have reinforced? mustn't you have reinforced? mustn't she have reinforced? mustn't we have reinforced? mustn't you have reinforced? mustn't they have reinforced?	mustn't I have been reinforcing? mustn't you have been reinforcing? mustn't she have been reinforcing? mustn't we have been reinforcing? mustn't you have been reinforcing? mustn't they have been reinforcing?