could synonymise
Regular verb: synonymise - synonymised- synonymised

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could synonymise
you could synonymise
she could synonymise
we could synonymise
you could synonymise
they could synonymise 	I could be synonymising
you could be synonymising
she could be synonymising
we could be synonymising
you could be synonymising
they could be synonymising	I could have synonymised
you could have synonymised
she could have synonymised
we could have synonymised
you could have synonymised
they could have synonymised	I could have been synonymising
you could have been synonymising
she could have been synonymising
we could have been synonymising
you could have been synonymising
they could have been synonymising	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't synonymise
you couldn't synonymise
she couldn't synonymise
we couldn't synonymise
you couldn't synonymise
they couldn't synonymise 	I couldn't be synonymising
you couldn't be synonymising
she couldn't be synonymising
we couldn't be synonymising
you couldn't be synonymising
they couldn't be synonymising	I couldn't have synonymised
you couldn't have synonymised
she couldn't have synonymised
we couldn't have synonymised
you couldn't have synonymised
they couldn't have synonymised	I couldn't have been synonymising
you couldn't have been synonymising
she couldn't have been synonymising
we couldn't have been synonymising
you couldn't have been synonymising
they couldn't have been synonymising	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I synonymise?
could you synonymise?
could she synonymise?
could we synonymise?
could you synonymise?
could they synonymise? 	could I be synonymising?
could you be synonymising?
could she be synonymising?
could we be synonymising?
could you be synonymising?
could they be synonymising? 	could I have synonymised?
could you have synonymised?
could she have synonymised?
could we have synonymised?
could you have synonymised?
could they have synonymised? 	could I have been synonymising?
could you have been synonymising?
could she have been synonymising?
could we have been synonymising?
could you have been synonymising?
could they have been synonymising? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I synonymise?
couldn't you synonymise?
couldn't she synonymise?
couldn't we synonymise?
couldn't you synonymise?
couldn't they synonymise? 	couldn't I be synonymising?
couldn't you be synonymising?
couldn't she be synonymising?
couldn't we be synonymising?
couldn't you be synonymising?
couldn't they be synonymising? 	couldn't I have synonymised?
couldn't you have synonymised?
couldn't she have synonymised?
couldn't we have synonymised?
couldn't you have synonymised?
couldn't they have synonymised? 	couldn't I have been synonymising?
couldn't you have been synonymising?
couldn't she have been synonymising?
couldn't we have been synonymising?
couldn't you have been synonymising?
couldn't they have been synonymising?