English verb conjugation
COULD TUNE UP

Regular verb: tune up - tune uped - tune uped

Warning, this verb may not exist. Conjugation is given as example.

Affirmation

Simple form	V-ing form
I could tune up you could tune up she could tune up we could tune up you could tune up they could tune up	I could be tune uping you could be tune uping she could be tune uping we could be tune uping you could be tune uping they could be tune uping
Perfect	V-ing perfect
I could have tune uped you could have tune uped she could have tune uped we could have tune uped you could have tune uped they could have tune uped	I could have been tune uping you could have been tune uping she could have been tune uping we could have been tune uping you could have been tune uping they could have been tune uping

Negation

Simple form	V-ing form
I couldn't tune up you couldn't tune up she couldn't tune up we couldn't tune up you couldn't tune up they couldn't tune up	I couldn't be tune uping you couldn't be tune uping she couldn't be tune uping we couldn't be tune uping you couldn't be tune uping they couldn't be tune uping
Perfect	V-ing perfect
I couldn't have tune uped you couldn't have tune uped she couldn't have tune uped we couldn't have tune uped you couldn't have tune uped they couldn't have tune uped	I couldn't have been tune uping you couldn't have been tune uping she couldn't have been tune uping we couldn't have been tune uping you couldn't have been tune uping they couldn't have been tune uping

Interrogative form

Simple form	V-ing form
could I tune up? could you tune up? could she tune up? could we tune up? could you tune up? could they tune up?	could I be tune uping? could you be tune uping? could she be tune uping? could we be tune uping? could you be tune uping? could they be tune uping?
Perfect	V-ing perfect
could I have tune uped? could you have tune uped? could she have tune uped? could we have tune uped? could you have tune uped? could they have tune uped?	could I have been tune uping? could you have been tune uping? could she have been tune uping? could we have been tune uping? could you have been tune uping? could they have been tune uping?

Interro-negative form

Simple form	V-ing form
couldn't I tune up? couldn't you tune up? couldn't she tune up? couldn't we tune up? couldn't you tune up? couldn't they tune up?	couldn't I be tune uping? couldn't you be tune uping? couldn't she be tune uping? couldn't we be tune uping? couldn't you be tune uping? couldn't they be tune uping?
Perfect	V-ing perfect
couldn't I have tune uped? couldn't you have tune uped? couldn't she have tune uped? couldn't we have tune uped? couldn't you have tune uped? couldn't they have tune uped?	couldn't I have been tune uping? couldn't you have been tune uping? couldn't she have been tune uping? couldn't we have been tune uping? couldn't you have been tune uping? couldn't they have been tune uping?