must mechanize
Regular verb: mechanize - mechanized- mechanized

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must mechanize
you must mechanize
she must mechanize
we must mechanize
you must mechanize
they must mechanize 	I must be mechanizing
you must be mechanizing
she must be mechanizing
we must be mechanizing
you must be mechanizing
they must be mechanizing	I must have mechanized
you must have mechanized
she must have mechanized
we must have mechanized
you must have mechanized
they must have mechanized	I must have been mechanizing
you must have been mechanizing
she must have been mechanizing
we must have been mechanizing
you must have been mechanizing
they must have been mechanizing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't mechanize
you mustn't mechanize
she mustn't mechanize
we mustn't mechanize
you mustn't mechanize
they mustn't mechanize 	I mustn't be mechanizing
you mustn't be mechanizing
she mustn't be mechanizing
we mustn't be mechanizing
you mustn't be mechanizing
they mustn't be mechanizing	I mustn't have mechanized
you mustn't have mechanized
she mustn't have mechanized
we mustn't have mechanized
you mustn't have mechanized
they mustn't have mechanized	I mustn't have been mechanizing
you mustn't have been mechanizing
she mustn't have been mechanizing
we mustn't have been mechanizing
you mustn't have been mechanizing
they mustn't have been mechanizing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I mechanize?
must you mechanize?
must she mechanize?
must we mechanize?
must you mechanize?
must they mechanize? 	must I be mechanizing?
must you be mechanizing?
must she be mechanizing?
must we be mechanizing?
must you be mechanizing?
must they be mechanizing? 	must I have mechanized?
must you have mechanized?
must she have mechanized?
must we have mechanized?
must you have mechanized?
must they have mechanized? 	must I have been mechanizing?
must you have been mechanizing?
must she have been mechanizing?
must we have been mechanizing?
must you have been mechanizing?
must they have been mechanizing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I mechanize?
mustn't you mechanize?
mustn't she mechanize?
mustn't we mechanize?
mustn't you mechanize?
mustn't they mechanize? 	mustn't I be mechanizing?
mustn't you be mechanizing?
mustn't she be mechanizing?
mustn't we be mechanizing?
mustn't you be mechanizing?
mustn't they be mechanizing? 	mustn't I have mechanized?
mustn't you have mechanized?
mustn't she have mechanized?
mustn't we have mechanized?
mustn't you have mechanized?
mustn't they have mechanized? 	mustn't I have been mechanizing?
mustn't you have been mechanizing?
mustn't she have been mechanizing?
mustn't we have been mechanizing?
mustn't you have been mechanizing?
mustn't they have been mechanizing?