must recommend
Regular verb: recommend - recommended- recommended

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must recommend
you must recommend
she must recommend
we must recommend
you must recommend
they must recommend 	I must be recommending
you must be recommending
she must be recommending
we must be recommending
you must be recommending
they must be recommending	I must have recommended
you must have recommended
she must have recommended
we must have recommended
you must have recommended
they must have recommended	I must have been recommending
you must have been recommending
she must have been recommending
we must have been recommending
you must have been recommending
they must have been recommending	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't recommend
you mustn't recommend
she mustn't recommend
we mustn't recommend
you mustn't recommend
they mustn't recommend 	I mustn't be recommending
you mustn't be recommending
she mustn't be recommending
we mustn't be recommending
you mustn't be recommending
they mustn't be recommending	I mustn't have recommended
you mustn't have recommended
she mustn't have recommended
we mustn't have recommended
you mustn't have recommended
they mustn't have recommended	I mustn't have been recommending
you mustn't have been recommending
she mustn't have been recommending
we mustn't have been recommending
you mustn't have been recommending
they mustn't have been recommending	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I recommend?
must you recommend?
must she recommend?
must we recommend?
must you recommend?
must they recommend? 	must I be recommending?
must you be recommending?
must she be recommending?
must we be recommending?
must you be recommending?
must they be recommending? 	must I have recommended?
must you have recommended?
must she have recommended?
must we have recommended?
must you have recommended?
must they have recommended? 	must I have been recommending?
must you have been recommending?
must she have been recommending?
must we have been recommending?
must you have been recommending?
must they have been recommending? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I recommend?
mustn't you recommend?
mustn't she recommend?
mustn't we recommend?
mustn't you recommend?
mustn't they recommend? 	mustn't I be recommending?
mustn't you be recommending?
mustn't she be recommending?
mustn't we be recommending?
mustn't you be recommending?
mustn't they be recommending? 	mustn't I have recommended?
mustn't you have recommended?
mustn't she have recommended?
mustn't we have recommended?
mustn't you have recommended?
mustn't they have recommended? 	mustn't I have been recommending?
mustn't you have been recommending?
mustn't she have been recommending?
mustn't we have been recommending?
mustn't you have been recommending?
mustn't they have been recommending?