could commercialise
Regular verb: commercialise - commercialised- commercialised

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could commercialise
you could commercialise
he could commercialise
we could commercialise
you could commercialise
they could commercialise 	I could be commercialising
you could be commercialising
he could be commercialising
we could be commercialising
you could be commercialising
they could be commercialising	I could have commercialised
you could have commercialised
he could have commercialised
we could have commercialised
you could have commercialised
they could have commercialised	I could have been commercialising
you could have been commercialising
he could have been commercialising
we could have been commercialising
you could have been commercialising
they could have been commercialising	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't commercialise
you couldn't commercialise
he couldn't commercialise
we couldn't commercialise
you couldn't commercialise
they couldn't commercialise 	I couldn't be commercialising
you couldn't be commercialising
he couldn't be commercialising
we couldn't be commercialising
you couldn't be commercialising
they couldn't be commercialising	I couldn't have commercialised
you couldn't have commercialised
he couldn't have commercialised
we couldn't have commercialised
you couldn't have commercialised
they couldn't have commercialised	I couldn't have been commercialising
you couldn't have been commercialising
he couldn't have been commercialising
we couldn't have been commercialising
you couldn't have been commercialising
they couldn't have been commercialising	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I commercialise?
could you commercialise?
could he commercialise?
could we commercialise?
could you commercialise?
could they commercialise? 	could I be commercialising?
could you be commercialising?
could he be commercialising?
could we be commercialising?
could you be commercialising?
could they be commercialising? 	could I have commercialised?
could you have commercialised?
could he have commercialised?
could we have commercialised?
could you have commercialised?
could they have commercialised? 	could I have been commercialising?
could you have been commercialising?
could he have been commercialising?
could we have been commercialising?
could you have been commercialising?
could they have been commercialising? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I commercialise?
couldn't you commercialise?
couldn't he commercialise?
couldn't we commercialise?
couldn't you commercialise?
couldn't they commercialise? 	couldn't I be commercialising?
couldn't you be commercialising?
couldn't he be commercialising?
couldn't we be commercialising?
couldn't you be commercialising?
couldn't they be commercialising? 	couldn't I have commercialised?
couldn't you have commercialised?
couldn't he have commercialised?
couldn't we have commercialised?
couldn't you have commercialised?
couldn't they have commercialised? 	couldn't I have been commercialising?
couldn't you have been commercialising?
couldn't he have been commercialising?
couldn't we have been commercialising?
couldn't you have been commercialising?
couldn't they have been commercialising?