could gelatinise
Regular verb: gelatinise - gelatinised- gelatinised

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could gelatinise
you could gelatinise
he could gelatinise
we could gelatinise
you could gelatinise
they could gelatinise 	I could be gelatinising
you could be gelatinising
he could be gelatinising
we could be gelatinising
you could be gelatinising
they could be gelatinising	I could have gelatinised
you could have gelatinised
he could have gelatinised
we could have gelatinised
you could have gelatinised
they could have gelatinised	I could have been gelatinising
you could have been gelatinising
he could have been gelatinising
we could have been gelatinising
you could have been gelatinising
they could have been gelatinising	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't gelatinise
you couldn't gelatinise
he couldn't gelatinise
we couldn't gelatinise
you couldn't gelatinise
they couldn't gelatinise 	I couldn't be gelatinising
you couldn't be gelatinising
he couldn't be gelatinising
we couldn't be gelatinising
you couldn't be gelatinising
they couldn't be gelatinising	I couldn't have gelatinised
you couldn't have gelatinised
he couldn't have gelatinised
we couldn't have gelatinised
you couldn't have gelatinised
they couldn't have gelatinised	I couldn't have been gelatinising
you couldn't have been gelatinising
he couldn't have been gelatinising
we couldn't have been gelatinising
you couldn't have been gelatinising
they couldn't have been gelatinising	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I gelatinise?
could you gelatinise?
could he gelatinise?
could we gelatinise?
could you gelatinise?
could they gelatinise? 	could I be gelatinising?
could you be gelatinising?
could he be gelatinising?
could we be gelatinising?
could you be gelatinising?
could they be gelatinising? 	could I have gelatinised?
could you have gelatinised?
could he have gelatinised?
could we have gelatinised?
could you have gelatinised?
could they have gelatinised? 	could I have been gelatinising?
could you have been gelatinising?
could he have been gelatinising?
could we have been gelatinising?
could you have been gelatinising?
could they have been gelatinising? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I gelatinise?
couldn't you gelatinise?
couldn't he gelatinise?
couldn't we gelatinise?
couldn't you gelatinise?
couldn't they gelatinise? 	couldn't I be gelatinising?
couldn't you be gelatinising?
couldn't he be gelatinising?
couldn't we be gelatinising?
couldn't you be gelatinising?
couldn't they be gelatinising? 	couldn't I have gelatinised?
couldn't you have gelatinised?
couldn't he have gelatinised?
couldn't we have gelatinised?
couldn't you have gelatinised?
couldn't they have gelatinised? 	couldn't I have been gelatinising?
couldn't you have been gelatinising?
couldn't he have been gelatinising?
couldn't we have been gelatinising?
couldn't you have been gelatinising?
couldn't they have been gelatinising?