could fraternise
Regular verb: fraternise - fraternised- fraternised

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could fraternise
you could fraternise
he could fraternise
we could fraternise
you could fraternise
they could fraternise 	I could be fraternising
you could be fraternising
he could be fraternising
we could be fraternising
you could be fraternising
they could be fraternising	I could have fraternised
you could have fraternised
he could have fraternised
we could have fraternised
you could have fraternised
they could have fraternised	I could have been fraternising
you could have been fraternising
he could have been fraternising
we could have been fraternising
you could have been fraternising
they could have been fraternising	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't fraternise
you couldn't fraternise
he couldn't fraternise
we couldn't fraternise
you couldn't fraternise
they couldn't fraternise 	I couldn't be fraternising
you couldn't be fraternising
he couldn't be fraternising
we couldn't be fraternising
you couldn't be fraternising
they couldn't be fraternising	I couldn't have fraternised
you couldn't have fraternised
he couldn't have fraternised
we couldn't have fraternised
you couldn't have fraternised
they couldn't have fraternised	I couldn't have been fraternising
you couldn't have been fraternising
he couldn't have been fraternising
we couldn't have been fraternising
you couldn't have been fraternising
they couldn't have been fraternising	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I fraternise?
could you fraternise?
could he fraternise?
could we fraternise?
could you fraternise?
could they fraternise? 	could I be fraternising?
could you be fraternising?
could he be fraternising?
could we be fraternising?
could you be fraternising?
could they be fraternising? 	could I have fraternised?
could you have fraternised?
could he have fraternised?
could we have fraternised?
could you have fraternised?
could they have fraternised? 	could I have been fraternising?
could you have been fraternising?
could he have been fraternising?
could we have been fraternising?
could you have been fraternising?
could they have been fraternising? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I fraternise?
couldn't you fraternise?
couldn't he fraternise?
couldn't we fraternise?
couldn't you fraternise?
couldn't they fraternise? 	couldn't I be fraternising?
couldn't you be fraternising?
couldn't he be fraternising?
couldn't we be fraternising?
couldn't you be fraternising?
couldn't they be fraternising? 	couldn't I have fraternised?
couldn't you have fraternised?
couldn't he have fraternised?
couldn't we have fraternised?
couldn't you have fraternised?
couldn't they have fraternised? 	couldn't I have been fraternising?
couldn't you have been fraternising?
couldn't he have been fraternising?
couldn't we have been fraternising?
couldn't you have been fraternising?
couldn't they have been fraternising?