English verb conjugation
CAN SUMMER

Regular verb: summer - summered - summered

Affirmation

Simple form	V-ing form
I can summer you can summer she can summer we can summer you can summer they can summer	I can be summering you can be summering she can be summering we can be summering you can be summering they can be summering
Perfect	V-ing perfect
I can have summered you can have summered she can have summered we can have summered you can have summered they can have summered	I can have been summering you can have been summering she can have been summering we can have been summering you can have been summering they can have been summering

Negation

Simple form	V-ing form
I can't summer you can't summer she can't summer we can't summer you can't summer they can't summer	I can't be summering you can't be summering she can't be summering we can't be summering you can't be summering they can't be summering
Perfect	V-ing perfect
I can't have summered you can't have summered she can't have summered we can't have summered you can't have summered they can't have summered	I can't have been summering you can't have been summering she can't have been summering we can't have been summering you can't have been summering they can't have been summering

Interrogative form

Simple form	V-ing form
can I summer? can you summer? can she summer? can we summer? can you summer? can they summer?	can I be summering? can you be summering? can she be summering? can we be summering? can you be summering? can they be summering?
Perfect	V-ing perfect
can I have summered? can you have summered? can she have summered? can we have summered? can you have summered? can they have summered?	can I have been summering? can you have been summering? can she have been summering? can we have been summering? can you have been summering? can they have been summering?

Interro-negative form

Simple form	V-ing form
can't I summer? can't you summer? can't she summer? can't we summer? can't you summer? can't they summer?	can't I be summering? can't you be summering? can't she be summering? can't we be summering? can't you be summering? can't they be summering?
Perfect	V-ing perfect
can't I have summered? can't you have summered? can't she have summered? can't we have summered? can't you have summered? can't they have summered?	can't I have been summering? can't you have been summering? can't she have been summering? can't we have been summering? can't you have been summering? can't they have been summering?