must apologize
Regular verb: apologize - apologized- apologized

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must apologize
you must apologize
she must apologize
we must apologize
you must apologize
they must apologize 	I must be apologizing
you must be apologizing
she must be apologizing
we must be apologizing
you must be apologizing
they must be apologizing	I must have apologized
you must have apologized
she must have apologized
we must have apologized
you must have apologized
they must have apologized	I must have been apologizing
you must have been apologizing
she must have been apologizing
we must have been apologizing
you must have been apologizing
they must have been apologizing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't apologize
you mustn't apologize
she mustn't apologize
we mustn't apologize
you mustn't apologize
they mustn't apologize 	I mustn't be apologizing
you mustn't be apologizing
she mustn't be apologizing
we mustn't be apologizing
you mustn't be apologizing
they mustn't be apologizing	I mustn't have apologized
you mustn't have apologized
she mustn't have apologized
we mustn't have apologized
you mustn't have apologized
they mustn't have apologized	I mustn't have been apologizing
you mustn't have been apologizing
she mustn't have been apologizing
we mustn't have been apologizing
you mustn't have been apologizing
they mustn't have been apologizing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I apologize?
must you apologize?
must she apologize?
must we apologize?
must you apologize?
must they apologize? 	must I be apologizing?
must you be apologizing?
must she be apologizing?
must we be apologizing?
must you be apologizing?
must they be apologizing? 	must I have apologized?
must you have apologized?
must she have apologized?
must we have apologized?
must you have apologized?
must they have apologized? 	must I have been apologizing?
must you have been apologizing?
must she have been apologizing?
must we have been apologizing?
must you have been apologizing?
must they have been apologizing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I apologize?
mustn't you apologize?
mustn't she apologize?
mustn't we apologize?
mustn't you apologize?
mustn't they apologize? 	mustn't I be apologizing?
mustn't you be apologizing?
mustn't she be apologizing?
mustn't we be apologizing?
mustn't you be apologizing?
mustn't they be apologizing? 	mustn't I have apologized?
mustn't you have apologized?
mustn't she have apologized?
mustn't we have apologized?
mustn't you have apologized?
mustn't they have apologized? 	mustn't I have been apologizing?
mustn't you have been apologizing?
mustn't she have been apologizing?
mustn't we have been apologizing?
mustn't you have been apologizing?
mustn't they have been apologizing?