English verb conjugation
COULD UNBRACE

Regular verb: unbrace - unbraced - unbraced

Affirmation

Simple form	V-ing form
I could unbrace you could unbrace he could unbrace we could unbrace you could unbrace they could unbrace	I could be unbracing you could be unbracing he could be unbracing we could be unbracing you could be unbracing they could be unbracing
Perfect	V-ing perfect
I could have unbraced you could have unbraced he could have unbraced we could have unbraced you could have unbraced they could have unbraced	I could have been unbracing you could have been unbracing he could have been unbracing we could have been unbracing you could have been unbracing they could have been unbracing

Negation

Simple form	V-ing form
I couldn't unbrace you couldn't unbrace he couldn't unbrace we couldn't unbrace you couldn't unbrace they couldn't unbrace	I couldn't be unbracing you couldn't be unbracing he couldn't be unbracing we couldn't be unbracing you couldn't be unbracing they couldn't be unbracing
Perfect	V-ing perfect
I couldn't have unbraced you couldn't have unbraced he couldn't have unbraced we couldn't have unbraced you couldn't have unbraced they couldn't have unbraced	I couldn't have been unbracing you couldn't have been unbracing he couldn't have been unbracing we couldn't have been unbracing you couldn't have been unbracing they couldn't have been unbracing

Interrogative form

Simple form	V-ing form
could I unbrace? could you unbrace? could he unbrace? could we unbrace? could you unbrace? could they unbrace?	could I be unbracing? could you be unbracing? could he be unbracing? could we be unbracing? could you be unbracing? could they be unbracing?
Perfect	V-ing perfect
could I have unbraced? could you have unbraced? could he have unbraced? could we have unbraced? could you have unbraced? could they have unbraced?	could I have been unbracing? could you have been unbracing? could he have been unbracing? could we have been unbracing? could you have been unbracing? could they have been unbracing?

Interro-negative form

Simple form	V-ing form
couldn't I unbrace? couldn't you unbrace? couldn't he unbrace? couldn't we unbrace? couldn't you unbrace? couldn't they unbrace?	couldn't I be unbracing? couldn't you be unbracing? couldn't he be unbracing? couldn't we be unbracing? couldn't you be unbracing? couldn't they be unbracing?
Perfect	V-ing perfect
couldn't I have unbraced? couldn't you have unbraced? couldn't he have unbraced? couldn't we have unbraced? couldn't you have unbraced? couldn't they have unbraced?	couldn't I have been unbracing? couldn't you have been unbracing? couldn't he have been unbracing? couldn't we have been unbracing? couldn't you have been unbracing? couldn't they have been unbracing?