could wince
Regular verb: wince - winced- winced

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could wince
you could wince
he could wince
we could wince
you could wince
they could wince 	I could be wincing
you could be wincing
he could be wincing
we could be wincing
you could be wincing
they could be wincing	I could have winced
you could have winced
he could have winced
we could have winced
you could have winced
they could have winced	I could have been wincing
you could have been wincing
he could have been wincing
we could have been wincing
you could have been wincing
they could have been wincing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't wince
you couldn't wince
he couldn't wince
we couldn't wince
you couldn't wince
they couldn't wince 	I couldn't be wincing
you couldn't be wincing
he couldn't be wincing
we couldn't be wincing
you couldn't be wincing
they couldn't be wincing	I couldn't have winced
you couldn't have winced
he couldn't have winced
we couldn't have winced
you couldn't have winced
they couldn't have winced	I couldn't have been wincing
you couldn't have been wincing
he couldn't have been wincing
we couldn't have been wincing
you couldn't have been wincing
they couldn't have been wincing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I wince?
could you wince?
could he wince?
could we wince?
could you wince?
could they wince? 	could I be wincing?
could you be wincing?
could he be wincing?
could we be wincing?
could you be wincing?
could they be wincing? 	could I have winced?
could you have winced?
could he have winced?
could we have winced?
could you have winced?
could they have winced? 	could I have been wincing?
could you have been wincing?
could he have been wincing?
could we have been wincing?
could you have been wincing?
could they have been wincing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I wince?
couldn't you wince?
couldn't he wince?
couldn't we wince?
couldn't you wince?
couldn't they wince? 	couldn't I be wincing?
couldn't you be wincing?
couldn't he be wincing?
couldn't we be wincing?
couldn't you be wincing?
couldn't they be wincing? 	couldn't I have winced?
couldn't you have winced?
couldn't he have winced?
couldn't we have winced?
couldn't you have winced?
couldn't they have winced? 	couldn't I have been wincing?
couldn't you have been wincing?
couldn't he have been wincing?
couldn't we have been wincing?
couldn't you have been wincing?
couldn't they have been wincing?