could socialise
Regular verb: socialise - socialised- socialised

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

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

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

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