could dissemble
Regular verb: dissemble - dissembled- dissembled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could dissemble
you could dissemble
he could dissemble
we could dissemble
you could dissemble
they could dissemble 	I could be dissembling
you could be dissembling
he could be dissembling
we could be dissembling
you could be dissembling
they could be dissembling	I could have dissembled
you could have dissembled
he could have dissembled
we could have dissembled
you could have dissembled
they could have dissembled	I could have been dissembling
you could have been dissembling
he could have been dissembling
we could have been dissembling
you could have been dissembling
they could have been dissembling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't dissemble
you couldn't dissemble
he couldn't dissemble
we couldn't dissemble
you couldn't dissemble
they couldn't dissemble 	I couldn't be dissembling
you couldn't be dissembling
he couldn't be dissembling
we couldn't be dissembling
you couldn't be dissembling
they couldn't be dissembling	I couldn't have dissembled
you couldn't have dissembled
he couldn't have dissembled
we couldn't have dissembled
you couldn't have dissembled
they couldn't have dissembled	I couldn't have been dissembling
you couldn't have been dissembling
he couldn't have been dissembling
we couldn't have been dissembling
you couldn't have been dissembling
they couldn't have been dissembling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I dissemble?
could you dissemble?
could he dissemble?
could we dissemble?
could you dissemble?
could they dissemble? 	could I be dissembling?
could you be dissembling?
could he be dissembling?
could we be dissembling?
could you be dissembling?
could they be dissembling? 	could I have dissembled?
could you have dissembled?
could he have dissembled?
could we have dissembled?
could you have dissembled?
could they have dissembled? 	could I have been dissembling?
could you have been dissembling?
could he have been dissembling?
could we have been dissembling?
could you have been dissembling?
could they have been dissembling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I dissemble?
couldn't you dissemble?
couldn't he dissemble?
couldn't we dissemble?
couldn't you dissemble?
couldn't they dissemble? 	couldn't I be dissembling?
couldn't you be dissembling?
couldn't he be dissembling?
couldn't we be dissembling?
couldn't you be dissembling?
couldn't they be dissembling? 	couldn't I have dissembled?
couldn't you have dissembled?
couldn't he have dissembled?
couldn't we have dissembled?
couldn't you have dissembled?
couldn't they have dissembled? 	couldn't I have been dissembling?
couldn't you have been dissembling?
couldn't he have been dissembling?
couldn't we have been dissembling?
couldn't you have been dissembling?
couldn't they have been dissembling?