could simper
Regular verb: simper - simpered- simpered

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could simper
you could simper
she could simper
we could simper
you could simper
they could simper 	I could be simpering
you could be simpering
she could be simpering
we could be simpering
you could be simpering
they could be simpering	I could have simpered
you could have simpered
she could have simpered
we could have simpered
you could have simpered
they could have simpered	I could have been simpering
you could have been simpering
she could have been simpering
we could have been simpering
you could have been simpering
they could have been simpering	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not simper
you could not simper
she could not simper
we could not simper
you could not simper
they could not simper 	I could not be simpering
you could not be simpering
she could not be simpering
we could not be simpering
you could not be simpering
they could not be simpering	I could not have simpered
you could not have simpered
she could not have simpered
we could not have simpered
you could not have simpered
they could not have simpered	I could not have been simpering
you could not have been simpering
she could not have been simpering
we could not have been simpering
you could not have been simpering
they could not have been simpering	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I simper?
could you simper?
could she simper?
could we simper?
could you simper?
could they simper? 	could I be simpering?
could you be simpering?
could she be simpering?
could we be simpering?
could you be simpering?
could they be simpering? 	could I have simpered?
could you have simpered?
could she have simpered?
could we have simpered?
could you have simpered?
could they have simpered? 	could I have been simpering?
could you have been simpering?
could she have been simpering?
could we have been simpering?
could you have been simpering?
could they have been simpering? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not simper?
could you not simper?
could she not simper?
could we not simper?
could you not simper?
could they not simper? 	could I not be simpering?
could you not be simpering?
could she not be simpering?
could we not be simpering?
could you not be simpering?
could they not be simpering? 	could I not have simpered?
could you not have simpered?
could she not have simpered?
could we not have simpered?
could you not have simpered?
could they not have simpered? 	could I not have been simpering?
could you not have been simpering?
could she not have been simpering?
could we not have been simpering?
could you not have been simpering?
could they not have been simpering?