must reinforce
Regular verb: reinforce - reinforced- reinforced

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
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	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 	Perfect 	V-ing perfect 	
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	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 	Perfect 	V-ing perfect 	
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? 	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 	Perfect 	V-ing perfect 	
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? 	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?