English verb conjugation
CAN TITTUP

Regular verb: tittup - tittuped - tittuped

Affirmation

Simple form	V-ing form
I can tittup you can tittup he can tittup we can tittup you can tittup they can tittup	I can be tittuping you can be tittuping he can be tittuping we can be tittuping you can be tittuping they can be tittuping
Perfect	V-ing perfect
I can have tittuped you can have tittuped he can have tittuped we can have tittuped you can have tittuped they can have tittuped	I can have been tittuping you can have been tittuping he can have been tittuping we can have been tittuping you can have been tittuping they can have been tittuping

Negation

Simple form	V-ing form
I cannot tittup you cannot tittup he cannot tittup we cannot tittup you cannot tittup they cannot tittup	I cannot be tittuping you cannot be tittuping he cannot be tittuping we cannot be tittuping you cannot be tittuping they cannot be tittuping
Perfect	V-ing perfect
I cannot have tittuped you cannot have tittuped he cannot have tittuped we cannot have tittuped you cannot have tittuped they cannot have tittuped	I cannot have been tittuping you cannot have been tittuping he cannot have been tittuping we cannot have been tittuping you cannot have been tittuping they cannot have been tittuping

Interrogative form

Simple form	V-ing form
can I tittup? can you tittup? can he tittup? can we tittup? can you tittup? can they tittup?	can I be tittuping? can you be tittuping? can he be tittuping? can we be tittuping? can you be tittuping? can they be tittuping?
Perfect	V-ing perfect
can I have tittuped? can you have tittuped? can he have tittuped? can we have tittuped? can you have tittuped? can they have tittuped?	can I have been tittuping? can you have been tittuping? can he have been tittuping? can we have been tittuping? can you have been tittuping? can they have been tittuping?

Interro-negative form

Simple form	V-ing form
can I not tittup? can you not tittup? can he not tittup? can we not tittup? can you not tittup? can they not tittup?	can I not be tittuping? can you not be tittuping? can he not be tittuping? can we not be tittuping? can you not be tittuping? can they not be tittuping?
Perfect	V-ing perfect
can I not have tittuped? can you not have tittuped? can he not have tittuped? can we not have tittuped? can you not have tittuped? can they not have tittuped?	can I not have been tittuping? can you not have been tittuping? can he not have been tittuping? can we not have been tittuping? can you not have been tittuping? can they not have been tittuping?