must concretize
Regular verb: concretize - concretized- concretized

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must concretize
you must concretize
he must concretize
we must concretize
you must concretize
they must concretize 	I must be concretizing
you must be concretizing
he must be concretizing
we must be concretizing
you must be concretizing
they must be concretizing	I must have concretized
you must have concretized
he must have concretized
we must have concretized
you must have concretized
they must have concretized	I must have been concretizing
you must have been concretizing
he must have been concretizing
we must have been concretizing
you must have been concretizing
they must have been concretizing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't concretize
you mustn't concretize
he mustn't concretize
we mustn't concretize
you mustn't concretize
they mustn't concretize 	I mustn't be concretizing
you mustn't be concretizing
he mustn't be concretizing
we mustn't be concretizing
you mustn't be concretizing
they mustn't be concretizing	I mustn't have concretized
you mustn't have concretized
he mustn't have concretized
we mustn't have concretized
you mustn't have concretized
they mustn't have concretized	I mustn't have been concretizing
you mustn't have been concretizing
he mustn't have been concretizing
we mustn't have been concretizing
you mustn't have been concretizing
they mustn't have been concretizing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I concretize?
must you concretize?
must he concretize?
must we concretize?
must you concretize?
must they concretize? 	must I be concretizing?
must you be concretizing?
must he be concretizing?
must we be concretizing?
must you be concretizing?
must they be concretizing? 	must I have concretized?
must you have concretized?
must he have concretized?
must we have concretized?
must you have concretized?
must they have concretized? 	must I have been concretizing?
must you have been concretizing?
must he have been concretizing?
must we have been concretizing?
must you have been concretizing?
must they have been concretizing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I concretize?
mustn't you concretize?
mustn't he concretize?
mustn't we concretize?
mustn't you concretize?
mustn't they concretize? 	mustn't I be concretizing?
mustn't you be concretizing?
mustn't he be concretizing?
mustn't we be concretizing?
mustn't you be concretizing?
mustn't they be concretizing? 	mustn't I have concretized?
mustn't you have concretized?
mustn't he have concretized?
mustn't we have concretized?
mustn't you have concretized?
mustn't they have concretized? 	mustn't I have been concretizing?
mustn't you have been concretizing?
mustn't he have been concretizing?
mustn't we have been concretizing?
mustn't you have been concretizing?
mustn't they have been concretizing?