must helenise
Regular verb: helenise - helenised- helenised

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must helenise
you must helenise
he must helenise
we must helenise
you must helenise
they must helenise 	I must be helenising
you must be helenising
he must be helenising
we must be helenising
you must be helenising
they must be helenising	I must have helenised
you must have helenised
he must have helenised
we must have helenised
you must have helenised
they must have helenised	I must have been helenising
you must have been helenising
he must have been helenising
we must have been helenising
you must have been helenising
they must have been helenising	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't helenise
you mustn't helenise
he mustn't helenise
we mustn't helenise
you mustn't helenise
they mustn't helenise 	I mustn't be helenising
you mustn't be helenising
he mustn't be helenising
we mustn't be helenising
you mustn't be helenising
they mustn't be helenising	I mustn't have helenised
you mustn't have helenised
he mustn't have helenised
we mustn't have helenised
you mustn't have helenised
they mustn't have helenised	I mustn't have been helenising
you mustn't have been helenising
he mustn't have been helenising
we mustn't have been helenising
you mustn't have been helenising
they mustn't have been helenising	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I helenise?
must you helenise?
must he helenise?
must we helenise?
must you helenise?
must they helenise? 	must I be helenising?
must you be helenising?
must he be helenising?
must we be helenising?
must you be helenising?
must they be helenising? 	must I have helenised?
must you have helenised?
must he have helenised?
must we have helenised?
must you have helenised?
must they have helenised? 	must I have been helenising?
must you have been helenising?
must he have been helenising?
must we have been helenising?
must you have been helenising?
must they have been helenising? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I helenise?
mustn't you helenise?
mustn't he helenise?
mustn't we helenise?
mustn't you helenise?
mustn't they helenise? 	mustn't I be helenising?
mustn't you be helenising?
mustn't he be helenising?
mustn't we be helenising?
mustn't you be helenising?
mustn't they be helenising? 	mustn't I have helenised?
mustn't you have helenised?
mustn't he have helenised?
mustn't we have helenised?
mustn't you have helenised?
mustn't they have helenised? 	mustn't I have been helenising?
mustn't you have been helenising?
mustn't he have been helenising?
mustn't we have been helenising?
mustn't you have been helenising?
mustn't they have been helenising?