must mechanise
Regular verb: mechanise - mechanised- mechanised

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must mechanise
you must mechanise
he must mechanise
we must mechanise
you must mechanise
they must mechanise 	I must be mechanising
you must be mechanising
he must be mechanising
we must be mechanising
you must be mechanising
they must be mechanising	I must have mechanised
you must have mechanised
he must have mechanised
we must have mechanised
you must have mechanised
they must have mechanised	I must have been mechanising
you must have been mechanising
he must have been mechanising
we must have been mechanising
you must have been mechanising
they must have been mechanising	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't mechanise
you mustn't mechanise
he mustn't mechanise
we mustn't mechanise
you mustn't mechanise
they mustn't mechanise 	I mustn't be mechanising
you mustn't be mechanising
he mustn't be mechanising
we mustn't be mechanising
you mustn't be mechanising
they mustn't be mechanising	I mustn't have mechanised
you mustn't have mechanised
he mustn't have mechanised
we mustn't have mechanised
you mustn't have mechanised
they mustn't have mechanised	I mustn't have been mechanising
you mustn't have been mechanising
he mustn't have been mechanising
we mustn't have been mechanising
you mustn't have been mechanising
they mustn't have been mechanising	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I mechanise?
must you mechanise?
must he mechanise?
must we mechanise?
must you mechanise?
must they mechanise? 	must I be mechanising?
must you be mechanising?
must he be mechanising?
must we be mechanising?
must you be mechanising?
must they be mechanising? 	must I have mechanised?
must you have mechanised?
must he have mechanised?
must we have mechanised?
must you have mechanised?
must they have mechanised? 	must I have been mechanising?
must you have been mechanising?
must he have been mechanising?
must we have been mechanising?
must you have been mechanising?
must they have been mechanising? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I mechanise?
mustn't you mechanise?
mustn't he mechanise?
mustn't we mechanise?
mustn't you mechanise?
mustn't they mechanise? 	mustn't I be mechanising?
mustn't you be mechanising?
mustn't he be mechanising?
mustn't we be mechanising?
mustn't you be mechanising?
mustn't they be mechanising? 	mustn't I have mechanised?
mustn't you have mechanised?
mustn't he have mechanised?
mustn't we have mechanised?
mustn't you have mechanised?
mustn't they have mechanised? 	mustn't I have been mechanising?
mustn't you have been mechanising?
mustn't he have been mechanising?
mustn't we have been mechanising?
mustn't you have been mechanising?
mustn't they have been mechanising?