English verb conjugation
COULD GRACE

Regular verb: grace - graced - graced

Affirmation

Simple form	V-ing form
I could grace you could grace he could grace we could grace you could grace they could grace	I could be gracing you could be gracing he could be gracing we could be gracing you could be gracing they could be gracing
Perfect	V-ing perfect
I could have graced you could have graced he could have graced we could have graced you could have graced they could have graced	I could have been gracing you could have been gracing he could have been gracing we could have been gracing you could have been gracing they could have been gracing

Negation

Simple form	V-ing form
I couldn't grace you couldn't grace he couldn't grace we couldn't grace you couldn't grace they couldn't grace	I couldn't be gracing you couldn't be gracing he couldn't be gracing we couldn't be gracing you couldn't be gracing they couldn't be gracing
Perfect	V-ing perfect
I couldn't have graced you couldn't have graced he couldn't have graced we couldn't have graced you couldn't have graced they couldn't have graced	I couldn't have been gracing you couldn't have been gracing he couldn't have been gracing we couldn't have been gracing you couldn't have been gracing they couldn't have been gracing

Interrogative form

Simple form	V-ing form
could I grace? could you grace? could he grace? could we grace? could you grace? could they grace?	could I be gracing? could you be gracing? could he be gracing? could we be gracing? could you be gracing? could they be gracing?
Perfect	V-ing perfect
could I have graced? could you have graced? could he have graced? could we have graced? could you have graced? could they have graced?	could I have been gracing? could you have been gracing? could he have been gracing? could we have been gracing? could you have been gracing? could they have been gracing?

Interro-negative form

Simple form	V-ing form
couldn't I grace? couldn't you grace? couldn't he grace? couldn't we grace? couldn't you grace? couldn't they grace?	couldn't I be gracing? couldn't you be gracing? couldn't he be gracing? couldn't we be gracing? couldn't you be gracing? couldn't they be gracing?
Perfect	V-ing perfect
couldn't I have graced? couldn't you have graced? couldn't he have graced? couldn't we have graced? couldn't you have graced? couldn't they have graced?	couldn't I have been gracing? couldn't you have been gracing? couldn't he have been gracing? couldn't we have been gracing? couldn't you have been gracing? couldn't they have been gracing?