could uncoil
Regular verb: uncoil - uncoiled- uncoiled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could uncoil
you could uncoil
he could uncoil
we could uncoil
you could uncoil
they could uncoil 	I could be uncoiling
you could be uncoiling
he could be uncoiling
we could be uncoiling
you could be uncoiling
they could be uncoiling	I could have uncoiled
you could have uncoiled
he could have uncoiled
we could have uncoiled
you could have uncoiled
they could have uncoiled	I could have been uncoiling
you could have been uncoiling
he could have been uncoiling
we could have been uncoiling
you could have been uncoiling
they could have been uncoiling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't uncoil
you couldn't uncoil
he couldn't uncoil
we couldn't uncoil
you couldn't uncoil
they couldn't uncoil 	I couldn't be uncoiling
you couldn't be uncoiling
he couldn't be uncoiling
we couldn't be uncoiling
you couldn't be uncoiling
they couldn't be uncoiling	I couldn't have uncoiled
you couldn't have uncoiled
he couldn't have uncoiled
we couldn't have uncoiled
you couldn't have uncoiled
they couldn't have uncoiled	I couldn't have been uncoiling
you couldn't have been uncoiling
he couldn't have been uncoiling
we couldn't have been uncoiling
you couldn't have been uncoiling
they couldn't have been uncoiling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I uncoil?
could you uncoil?
could he uncoil?
could we uncoil?
could you uncoil?
could they uncoil? 	could I be uncoiling?
could you be uncoiling?
could he be uncoiling?
could we be uncoiling?
could you be uncoiling?
could they be uncoiling? 	could I have uncoiled?
could you have uncoiled?
could he have uncoiled?
could we have uncoiled?
could you have uncoiled?
could they have uncoiled? 	could I have been uncoiling?
could you have been uncoiling?
could he have been uncoiling?
could we have been uncoiling?
could you have been uncoiling?
could they have been uncoiling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I uncoil?
couldn't you uncoil?
couldn't he uncoil?
couldn't we uncoil?
couldn't you uncoil?
couldn't they uncoil? 	couldn't I be uncoiling?
couldn't you be uncoiling?
couldn't he be uncoiling?
couldn't we be uncoiling?
couldn't you be uncoiling?
couldn't they be uncoiling? 	couldn't I have uncoiled?
couldn't you have uncoiled?
couldn't he have uncoiled?
couldn't we have uncoiled?
couldn't you have uncoiled?
couldn't they have uncoiled? 	couldn't I have been uncoiling?
couldn't you have been uncoiling?
couldn't he have been uncoiling?
couldn't we have been uncoiling?
couldn't you have been uncoiling?
couldn't they have been uncoiling?