could overspecialise
Regular verb: overspecialise - overspecialised- overspecialised

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could overspecialise
you could overspecialise
he could overspecialise
we could overspecialise
you could overspecialise
they could overspecialise 	I could be overspecialising
you could be overspecialising
he could be overspecialising
we could be overspecialising
you could be overspecialising
they could be overspecialising	I could have overspecialised
you could have overspecialised
he could have overspecialised
we could have overspecialised
you could have overspecialised
they could have overspecialised	I could have been overspecialising
you could have been overspecialising
he could have been overspecialising
we could have been overspecialising
you could have been overspecialising
they could have been overspecialising	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't overspecialise
you couldn't overspecialise
he couldn't overspecialise
we couldn't overspecialise
you couldn't overspecialise
they couldn't overspecialise 	I couldn't be overspecialising
you couldn't be overspecialising
he couldn't be overspecialising
we couldn't be overspecialising
you couldn't be overspecialising
they couldn't be overspecialising	I couldn't have overspecialised
you couldn't have overspecialised
he couldn't have overspecialised
we couldn't have overspecialised
you couldn't have overspecialised
they couldn't have overspecialised	I couldn't have been overspecialising
you couldn't have been overspecialising
he couldn't have been overspecialising
we couldn't have been overspecialising
you couldn't have been overspecialising
they couldn't have been overspecialising	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I overspecialise?
could you overspecialise?
could he overspecialise?
could we overspecialise?
could you overspecialise?
could they overspecialise? 	could I be overspecialising?
could you be overspecialising?
could he be overspecialising?
could we be overspecialising?
could you be overspecialising?
could they be overspecialising? 	could I have overspecialised?
could you have overspecialised?
could he have overspecialised?
could we have overspecialised?
could you have overspecialised?
could they have overspecialised? 	could I have been overspecialising?
could you have been overspecialising?
could he have been overspecialising?
could we have been overspecialising?
could you have been overspecialising?
could they have been overspecialising? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I overspecialise?
couldn't you overspecialise?
couldn't he overspecialise?
couldn't we overspecialise?
couldn't you overspecialise?
couldn't they overspecialise? 	couldn't I be overspecialising?
couldn't you be overspecialising?
couldn't he be overspecialising?
couldn't we be overspecialising?
couldn't you be overspecialising?
couldn't they be overspecialising? 	couldn't I have overspecialised?
couldn't you have overspecialised?
couldn't he have overspecialised?
couldn't we have overspecialised?
couldn't you have overspecialised?
couldn't they have overspecialised? 	couldn't I have been overspecialising?
couldn't you have been overspecialising?
couldn't he have been overspecialising?
couldn't we have been overspecialising?
couldn't you have been overspecialising?
couldn't they have been overspecialising?