could immortalise
Regular verb: immortalise - immortalised- immortalised

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could immortalise
you could immortalise
he could immortalise
we could immortalise
you could immortalise
they could immortalise 	I could be immortalising
you could be immortalising
he could be immortalising
we could be immortalising
you could be immortalising
they could be immortalising	I could have immortalised
you could have immortalised
he could have immortalised
we could have immortalised
you could have immortalised
they could have immortalised	I could have been immortalising
you could have been immortalising
he could have been immortalising
we could have been immortalising
you could have been immortalising
they could have been immortalising	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't immortalise
you couldn't immortalise
he couldn't immortalise
we couldn't immortalise
you couldn't immortalise
they couldn't immortalise 	I couldn't be immortalising
you couldn't be immortalising
he couldn't be immortalising
we couldn't be immortalising
you couldn't be immortalising
they couldn't be immortalising	I couldn't have immortalised
you couldn't have immortalised
he couldn't have immortalised
we couldn't have immortalised
you couldn't have immortalised
they couldn't have immortalised	I couldn't have been immortalising
you couldn't have been immortalising
he couldn't have been immortalising
we couldn't have been immortalising
you couldn't have been immortalising
they couldn't have been immortalising	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I immortalise?
could you immortalise?
could he immortalise?
could we immortalise?
could you immortalise?
could they immortalise? 	could I be immortalising?
could you be immortalising?
could he be immortalising?
could we be immortalising?
could you be immortalising?
could they be immortalising? 	could I have immortalised?
could you have immortalised?
could he have immortalised?
could we have immortalised?
could you have immortalised?
could they have immortalised? 	could I have been immortalising?
could you have been immortalising?
could he have been immortalising?
could we have been immortalising?
could you have been immortalising?
could they have been immortalising? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I immortalise?
couldn't you immortalise?
couldn't he immortalise?
couldn't we immortalise?
couldn't you immortalise?
couldn't they immortalise? 	couldn't I be immortalising?
couldn't you be immortalising?
couldn't he be immortalising?
couldn't we be immortalising?
couldn't you be immortalising?
couldn't they be immortalising? 	couldn't I have immortalised?
couldn't you have immortalised?
couldn't he have immortalised?
couldn't we have immortalised?
couldn't you have immortalised?
couldn't they have immortalised? 	couldn't I have been immortalising?
couldn't you have been immortalising?
couldn't he have been immortalising?
couldn't we have been immortalising?
couldn't you have been immortalising?
couldn't they have been immortalising?