must socialise
Regular verb: socialise - socialised- socialised

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must socialise
you must socialise
she must socialise
we must socialise
you must socialise
they must socialise 	I must be socialising
you must be socialising
she must be socialising
we must be socialising
you must be socialising
they must be socialising	I must have socialised
you must have socialised
she must have socialised
we must have socialised
you must have socialised
they must have socialised	I must have been socialising
you must have been socialising
she must have been socialising
we must have been socialising
you must have been socialising
they must have been socialising	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't socialise
you mustn't socialise
she mustn't socialise
we mustn't socialise
you mustn't socialise
they mustn't socialise 	I mustn't be socialising
you mustn't be socialising
she mustn't be socialising
we mustn't be socialising
you mustn't be socialising
they mustn't be socialising	I mustn't have socialised
you mustn't have socialised
she mustn't have socialised
we mustn't have socialised
you mustn't have socialised
they mustn't have socialised	I mustn't have been socialising
you mustn't have been socialising
she mustn't have been socialising
we mustn't have been socialising
you mustn't have been socialising
they mustn't have been socialising	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I socialise?
must you socialise?
must she socialise?
must we socialise?
must you socialise?
must they socialise? 	must I be socialising?
must you be socialising?
must she be socialising?
must we be socialising?
must you be socialising?
must they be socialising? 	must I have socialised?
must you have socialised?
must she have socialised?
must we have socialised?
must you have socialised?
must they have socialised? 	must I have been socialising?
must you have been socialising?
must she have been socialising?
must we have been socialising?
must you have been socialising?
must they have been socialising? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I socialise?
mustn't you socialise?
mustn't she socialise?
mustn't we socialise?
mustn't you socialise?
mustn't they socialise? 	mustn't I be socialising?
mustn't you be socialising?
mustn't she be socialising?
mustn't we be socialising?
mustn't you be socialising?
mustn't they be socialising? 	mustn't I have socialised?
mustn't you have socialised?
mustn't she have socialised?
mustn't we have socialised?
mustn't you have socialised?
mustn't they have socialised? 	mustn't I have been socialising?
mustn't you have been socialising?
mustn't she have been socialising?
mustn't we have been socialising?
mustn't you have been socialising?
mustn't they have been socialising?