could embroil
Regular verb: embroil - embroiled- embroiled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could embroil
you could embroil
he could embroil
we could embroil
you could embroil
they could embroil 	I could be embroiling
you could be embroiling
he could be embroiling
we could be embroiling
you could be embroiling
they could be embroiling	I could have embroiled
you could have embroiled
he could have embroiled
we could have embroiled
you could have embroiled
they could have embroiled	I could have been embroiling
you could have been embroiling
he could have been embroiling
we could have been embroiling
you could have been embroiling
they could have been embroiling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't embroil
you couldn't embroil
he couldn't embroil
we couldn't embroil
you couldn't embroil
they couldn't embroil 	I couldn't be embroiling
you couldn't be embroiling
he couldn't be embroiling
we couldn't be embroiling
you couldn't be embroiling
they couldn't be embroiling	I couldn't have embroiled
you couldn't have embroiled
he couldn't have embroiled
we couldn't have embroiled
you couldn't have embroiled
they couldn't have embroiled	I couldn't have been embroiling
you couldn't have been embroiling
he couldn't have been embroiling
we couldn't have been embroiling
you couldn't have been embroiling
they couldn't have been embroiling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I embroil?
could you embroil?
could he embroil?
could we embroil?
could you embroil?
could they embroil? 	could I be embroiling?
could you be embroiling?
could he be embroiling?
could we be embroiling?
could you be embroiling?
could they be embroiling? 	could I have embroiled?
could you have embroiled?
could he have embroiled?
could we have embroiled?
could you have embroiled?
could they have embroiled? 	could I have been embroiling?
could you have been embroiling?
could he have been embroiling?
could we have been embroiling?
could you have been embroiling?
could they have been embroiling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I embroil?
couldn't you embroil?
couldn't he embroil?
couldn't we embroil?
couldn't you embroil?
couldn't they embroil? 	couldn't I be embroiling?
couldn't you be embroiling?
couldn't he be embroiling?
couldn't we be embroiling?
couldn't you be embroiling?
couldn't they be embroiling? 	couldn't I have embroiled?
couldn't you have embroiled?
couldn't he have embroiled?
couldn't we have embroiled?
couldn't you have embroiled?
couldn't they have embroiled? 	couldn't I have been embroiling?
couldn't you have been embroiling?
couldn't he have been embroiling?
couldn't we have been embroiling?
couldn't you have been embroiling?
couldn't they have been embroiling?