could disguise
Regular verb: disguise - disguised- disguised

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could disguise
you could disguise
he could disguise
we could disguise
you could disguise
they could disguise 	I could be disguising
you could be disguising
he could be disguising
we could be disguising
you could be disguising
they could be disguising	I could have disguised
you could have disguised
he could have disguised
we could have disguised
you could have disguised
they could have disguised	I could have been disguising
you could have been disguising
he could have been disguising
we could have been disguising
you could have been disguising
they could have been disguising	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't disguise
you couldn't disguise
he couldn't disguise
we couldn't disguise
you couldn't disguise
they couldn't disguise 	I couldn't be disguising
you couldn't be disguising
he couldn't be disguising
we couldn't be disguising
you couldn't be disguising
they couldn't be disguising	I couldn't have disguised
you couldn't have disguised
he couldn't have disguised
we couldn't have disguised
you couldn't have disguised
they couldn't have disguised	I couldn't have been disguising
you couldn't have been disguising
he couldn't have been disguising
we couldn't have been disguising
you couldn't have been disguising
they couldn't have been disguising	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I disguise?
could you disguise?
could he disguise?
could we disguise?
could you disguise?
could they disguise? 	could I be disguising?
could you be disguising?
could he be disguising?
could we be disguising?
could you be disguising?
could they be disguising? 	could I have disguised?
could you have disguised?
could he have disguised?
could we have disguised?
could you have disguised?
could they have disguised? 	could I have been disguising?
could you have been disguising?
could he have been disguising?
could we have been disguising?
could you have been disguising?
could they have been disguising? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I disguise?
couldn't you disguise?
couldn't he disguise?
couldn't we disguise?
couldn't you disguise?
couldn't they disguise? 	couldn't I be disguising?
couldn't you be disguising?
couldn't he be disguising?
couldn't we be disguising?
couldn't you be disguising?
couldn't they be disguising? 	couldn't I have disguised?
couldn't you have disguised?
couldn't he have disguised?
couldn't we have disguised?
couldn't you have disguised?
couldn't they have disguised? 	couldn't I have been disguising?
couldn't you have been disguising?
couldn't he have been disguising?
couldn't we have been disguising?
couldn't you have been disguising?
couldn't they have been disguising?