English verb conjugation
CAN ZIP

Regular verb: zip - zipped - zipped

Affirmation

Simple form	V-ing form
I can zip you can zip she can zip we can zip you can zip they can zip	I can be zipping you can be zipping she can be zipping we can be zipping you can be zipping they can be zipping
Perfect	V-ing perfect
I can have zipped you can have zipped she can have zipped we can have zipped you can have zipped they can have zipped	I can have been zipping you can have been zipping she can have been zipping we can have been zipping you can have been zipping they can have been zipping

Negation

Simple form	V-ing form
I cannot zip you cannot zip she cannot zip we cannot zip you cannot zip they cannot zip	I cannot be zipping you cannot be zipping she cannot be zipping we cannot be zipping you cannot be zipping they cannot be zipping
Perfect	V-ing perfect
I cannot have zipped you cannot have zipped she cannot have zipped we cannot have zipped you cannot have zipped they cannot have zipped	I cannot have been zipping you cannot have been zipping she cannot have been zipping we cannot have been zipping you cannot have been zipping they cannot have been zipping

Interrogative form

Simple form	V-ing form
can I zip? can you zip? can she zip? can we zip? can you zip? can they zip?	can I be zipping? can you be zipping? can she be zipping? can we be zipping? can you be zipping? can they be zipping?
Perfect	V-ing perfect
can I have zipped? can you have zipped? can she have zipped? can we have zipped? can you have zipped? can they have zipped?	can I have been zipping? can you have been zipping? can she have been zipping? can we have been zipping? can you have been zipping? can they have been zipping?

Interro-negative form

Simple form	V-ing form
can I not zip? can you not zip? can she not zip? can we not zip? can you not zip? can they not zip?	can I not be zipping? can you not be zipping? can she not be zipping? can we not be zipping? can you not be zipping? can they not be zipping?
Perfect	V-ing perfect
can I not have zipped? can you not have zipped? can she not have zipped? can we not have zipped? can you not have zipped? can they not have zipped?	can I not have been zipping? can you not have been zipping? can she not have been zipping? can we not have been zipping? can you not have been zipping? can they not have been zipping?