English verb conjugation
CAN ZIP

Regular verb: zip - zipped - zipped

Affirmation

Simple form	V-ing form
I can zip you can zip he can zip we can zip you can zip they can zip	I can be zipping you can be zipping he 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 he 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 he 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 can't zip you can't zip he can't zip we can't zip you can't zip they can't zip	I can't be zipping you can't be zipping he can't be zipping we can't be zipping you can't be zipping they can't be zipping
Perfect	V-ing perfect
I can't have zipped you can't have zipped he can't have zipped we can't have zipped you can't have zipped they can't have zipped	I can't have been zipping you can't have been zipping he can't have been zipping we can't have been zipping you can't have been zipping they can't have been zipping

Interrogative form

Simple form	V-ing form
can I zip? can you zip? can he zip? can we zip? can you zip? can they zip?	can I be zipping? can you be zipping? can he 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 he 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 he 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't I zip? can't you zip? can't he zip? can't we zip? can't you zip? can't they zip?	can't I be zipping? can't you be zipping? can't he be zipping? can't we be zipping? can't you be zipping? can't they be zipping?
Perfect	V-ing perfect
can't I have zipped? can't you have zipped? can't he have zipped? can't we have zipped? can't you have zipped? can't they have zipped?	can't I have been zipping? can't you have been zipping? can't he have been zipping? can't we have been zipping? can't you have been zipping? can't they have been zipping?