English verb conjugation
CAN TUNE

Regular verb: tune - tuned - tuned

Affirmation

Simple form	V-ing form
I can tune you can tune she can tune we can tune you can tune they can tune	I can be tuning you can be tuning she can be tuning we can be tuning you can be tuning they can be tuning
Perfect	V-ing perfect
I can have tuned you can have tuned she can have tuned we can have tuned you can have tuned they can have tuned	I can have been tuning you can have been tuning she can have been tuning we can have been tuning you can have been tuning they can have been tuning

Negation

Simple form	V-ing form
I can't tune you can't tune she can't tune we can't tune you can't tune they can't tune	I can't be tuning you can't be tuning she can't be tuning we can't be tuning you can't be tuning they can't be tuning
Perfect	V-ing perfect
I can't have tuned you can't have tuned she can't have tuned we can't have tuned you can't have tuned they can't have tuned	I can't have been tuning you can't have been tuning she can't have been tuning we can't have been tuning you can't have been tuning they can't have been tuning

Interrogative form

Simple form	V-ing form
can I tune? can you tune? can she tune? can we tune? can you tune? can they tune?	can I be tuning? can you be tuning? can she be tuning? can we be tuning? can you be tuning? can they be tuning?
Perfect	V-ing perfect
can I have tuned? can you have tuned? can she have tuned? can we have tuned? can you have tuned? can they have tuned?	can I have been tuning? can you have been tuning? can she have been tuning? can we have been tuning? can you have been tuning? can they have been tuning?

Interro-negative form

Simple form	V-ing form
can't I tune? can't you tune? can't she tune? can't we tune? can't you tune? can't they tune?	can't I be tuning? can't you be tuning? can't she be tuning? can't we be tuning? can't you be tuning? can't they be tuning?
Perfect	V-ing perfect
can't I have tuned? can't you have tuned? can't she have tuned? can't we have tuned? can't you have tuned? can't they have tuned?	can't I have been tuning? can't you have been tuning? can't she have been tuning? can't we have been tuning? can't you have been tuning? can't they have been tuning?