English verb conjugation
CAN CALENDER

Regular verb: calender - calendered - calendered

Affirmation

Simple form	V-ing form
I can calender you can calender he can calender we can calender you can calender they can calender	I can be calendering you can be calendering he can be calendering we can be calendering you can be calendering they can be calendering
Perfect	V-ing perfect
I can have calendered you can have calendered he can have calendered we can have calendered you can have calendered they can have calendered	I can have been calendering you can have been calendering he can have been calendering we can have been calendering you can have been calendering they can have been calendering

Negation

Simple form	V-ing form
I can't calender you can't calender he can't calender we can't calender you can't calender they can't calender	I can't be calendering you can't be calendering he can't be calendering we can't be calendering you can't be calendering they can't be calendering
Perfect	V-ing perfect
I can't have calendered you can't have calendered he can't have calendered we can't have calendered you can't have calendered they can't have calendered	I can't have been calendering you can't have been calendering he can't have been calendering we can't have been calendering you can't have been calendering they can't have been calendering

Interrogative form

Simple form	V-ing form
can I calender? can you calender? can he calender? can we calender? can you calender? can they calender?	can I be calendering? can you be calendering? can he be calendering? can we be calendering? can you be calendering? can they be calendering?
Perfect	V-ing perfect
can I have calendered? can you have calendered? can he have calendered? can we have calendered? can you have calendered? can they have calendered?	can I have been calendering? can you have been calendering? can he have been calendering? can we have been calendering? can you have been calendering? can they have been calendering?

Interro-negative form

Simple form	V-ing form
can't I calender? can't you calender? can't he calender? can't we calender? can't you calender? can't they calender?	can't I be calendering? can't you be calendering? can't he be calendering? can't we be calendering? can't you be calendering? can't they be calendering?
Perfect	V-ing perfect
can't I have calendered? can't you have calendered? can't he have calendered? can't we have calendered? can't you have calendered? can't they have calendered?	can't I have been calendering? can't you have been calendering? can't he have been calendering? can't we have been calendering? can't you have been calendering? can't they have been calendering?