English verb conjugation
CAN TICK

Regular verb: tick - ticked - ticked

Affirmation

Simple form	V-ing form
I can tick you can tick she can tick we can tick you can tick they can tick	I can be ticking you can be ticking she can be ticking we can be ticking you can be ticking they can be ticking
Perfect	V-ing perfect
I can have ticked you can have ticked she can have ticked we can have ticked you can have ticked they can have ticked	I can have been ticking you can have been ticking she can have been ticking we can have been ticking you can have been ticking they can have been ticking

Negation

Simple form	V-ing form
I cannot tick you cannot tick she cannot tick we cannot tick you cannot tick they cannot tick	I cannot be ticking you cannot be ticking she cannot be ticking we cannot be ticking you cannot be ticking they cannot be ticking
Perfect	V-ing perfect
I cannot have ticked you cannot have ticked she cannot have ticked we cannot have ticked you cannot have ticked they cannot have ticked	I cannot have been ticking you cannot have been ticking she cannot have been ticking we cannot have been ticking you cannot have been ticking they cannot have been ticking

Interrogative form

Simple form	V-ing form
can I tick? can you tick? can she tick? can we tick? can you tick? can they tick?	can I be ticking? can you be ticking? can she be ticking? can we be ticking? can you be ticking? can they be ticking?
Perfect	V-ing perfect
can I have ticked? can you have ticked? can she have ticked? can we have ticked? can you have ticked? can they have ticked?	can I have been ticking? can you have been ticking? can she have been ticking? can we have been ticking? can you have been ticking? can they have been ticking?

Interro-negative form

Simple form	V-ing form
can I not tick? can you not tick? can she not tick? can we not tick? can you not tick? can they not tick?	can I not be ticking? can you not be ticking? can she not be ticking? can we not be ticking? can you not be ticking? can they not be ticking?
Perfect	V-ing perfect
can I not have ticked? can you not have ticked? can she not have ticked? can we not have ticked? can you not have ticked? can they not have ticked?	can I not have been ticking? can you not have been ticking? can she not have been ticking? can we not have been ticking? can you not have been ticking? can they not have been ticking?