English verb conjugation
COULD SHELLAC

Regular verb: shellac - shellaced - shellaced

Affirmation

Simple form	V-ing form
I could shellac you could shellac he could shellac we could shellac you could shellac they could shellac	I could be shellacing you could be shellacing he could be shellacing we could be shellacing you could be shellacing they could be shellacing
Perfect	V-ing perfect
I could have shellaced you could have shellaced he could have shellaced we could have shellaced you could have shellaced they could have shellaced	I could have been shellacing you could have been shellacing he could have been shellacing we could have been shellacing you could have been shellacing they could have been shellacing

Negation

Simple form	V-ing form
I couldn't shellac you couldn't shellac he couldn't shellac we couldn't shellac you couldn't shellac they couldn't shellac	I couldn't be shellacing you couldn't be shellacing he couldn't be shellacing we couldn't be shellacing you couldn't be shellacing they couldn't be shellacing
Perfect	V-ing perfect
I couldn't have shellaced you couldn't have shellaced he couldn't have shellaced we couldn't have shellaced you couldn't have shellaced they couldn't have shellaced	I couldn't have been shellacing you couldn't have been shellacing he couldn't have been shellacing we couldn't have been shellacing you couldn't have been shellacing they couldn't have been shellacing

Interrogative form

Simple form	V-ing form
could I shellac? could you shellac? could he shellac? could we shellac? could you shellac? could they shellac?	could I be shellacing? could you be shellacing? could he be shellacing? could we be shellacing? could you be shellacing? could they be shellacing?
Perfect	V-ing perfect
could I have shellaced? could you have shellaced? could he have shellaced? could we have shellaced? could you have shellaced? could they have shellaced?	could I have been shellacing? could you have been shellacing? could he have been shellacing? could we have been shellacing? could you have been shellacing? could they have been shellacing?

Interro-negative form

Simple form	V-ing form
couldn't I shellac? couldn't you shellac? couldn't he shellac? couldn't we shellac? couldn't you shellac? couldn't they shellac?	couldn't I be shellacing? couldn't you be shellacing? couldn't he be shellacing? couldn't we be shellacing? couldn't you be shellacing? couldn't they be shellacing?
Perfect	V-ing perfect
couldn't I have shellaced? couldn't you have shellaced? couldn't he have shellaced? couldn't we have shellaced? couldn't you have shellaced? couldn't they have shellaced?	couldn't I have been shellacing? couldn't you have been shellacing? couldn't he have been shellacing? couldn't we have been shellacing? couldn't you have been shellacing? couldn't they have been shellacing?