could apostrophise
Regular verb: apostrophise - apostrophised- apostrophised

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could apostrophise
you could apostrophise
he could apostrophise
we could apostrophise
you could apostrophise
they could apostrophise 	I could be apostrophising
you could be apostrophising
he could be apostrophising
we could be apostrophising
you could be apostrophising
they could be apostrophising	I could have apostrophised
you could have apostrophised
he could have apostrophised
we could have apostrophised
you could have apostrophised
they could have apostrophised	I could have been apostrophising
you could have been apostrophising
he could have been apostrophising
we could have been apostrophising
you could have been apostrophising
they could have been apostrophising	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't apostrophise
you couldn't apostrophise
he couldn't apostrophise
we couldn't apostrophise
you couldn't apostrophise
they couldn't apostrophise 	I couldn't be apostrophising
you couldn't be apostrophising
he couldn't be apostrophising
we couldn't be apostrophising
you couldn't be apostrophising
they couldn't be apostrophising	I couldn't have apostrophised
you couldn't have apostrophised
he couldn't have apostrophised
we couldn't have apostrophised
you couldn't have apostrophised
they couldn't have apostrophised	I couldn't have been apostrophising
you couldn't have been apostrophising
he couldn't have been apostrophising
we couldn't have been apostrophising
you couldn't have been apostrophising
they couldn't have been apostrophising	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I apostrophise?
could you apostrophise?
could he apostrophise?
could we apostrophise?
could you apostrophise?
could they apostrophise? 	could I be apostrophising?
could you be apostrophising?
could he be apostrophising?
could we be apostrophising?
could you be apostrophising?
could they be apostrophising? 	could I have apostrophised?
could you have apostrophised?
could he have apostrophised?
could we have apostrophised?
could you have apostrophised?
could they have apostrophised? 	could I have been apostrophising?
could you have been apostrophising?
could he have been apostrophising?
could we have been apostrophising?
could you have been apostrophising?
could they have been apostrophising? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I apostrophise?
couldn't you apostrophise?
couldn't he apostrophise?
couldn't we apostrophise?
couldn't you apostrophise?
couldn't they apostrophise? 	couldn't I be apostrophising?
couldn't you be apostrophising?
couldn't he be apostrophising?
couldn't we be apostrophising?
couldn't you be apostrophising?
couldn't they be apostrophising? 	couldn't I have apostrophised?
couldn't you have apostrophised?
couldn't he have apostrophised?
couldn't we have apostrophised?
couldn't you have apostrophised?
couldn't they have apostrophised? 	couldn't I have been apostrophising?
couldn't you have been apostrophising?
couldn't he have been apostrophising?
couldn't we have been apostrophising?
couldn't you have been apostrophising?
couldn't they have been apostrophising?