English verb conjugation
CAN PROFESS

Regular verb: profess - professed - professed

Affirmation

Simple form	V-ing form
I can profess you can profess he can profess we can profess you can profess they can profess	I can be professing you can be professing he can be professing we can be professing you can be professing they can be professing
Perfect	V-ing perfect
I can have professed you can have professed he can have professed we can have professed you can have professed they can have professed	I can have been professing you can have been professing he can have been professing we can have been professing you can have been professing they can have been professing

Negation

Simple form	V-ing form
I can't profess you can't profess he can't profess we can't profess you can't profess they can't profess	I can't be professing you can't be professing he can't be professing we can't be professing you can't be professing they can't be professing
Perfect	V-ing perfect
I can't have professed you can't have professed he can't have professed we can't have professed you can't have professed they can't have professed	I can't have been professing you can't have been professing he can't have been professing we can't have been professing you can't have been professing they can't have been professing

Interrogative form

Simple form	V-ing form
can I profess? can you profess? can he profess? can we profess? can you profess? can they profess?	can I be professing? can you be professing? can he be professing? can we be professing? can you be professing? can they be professing?
Perfect	V-ing perfect
can I have professed? can you have professed? can he have professed? can we have professed? can you have professed? can they have professed?	can I have been professing? can you have been professing? can he have been professing? can we have been professing? can you have been professing? can they have been professing?

Interro-negative form

Simple form	V-ing form
can't I profess? can't you profess? can't he profess? can't we profess? can't you profess? can't they profess?	can't I be professing? can't you be professing? can't he be professing? can't we be professing? can't you be professing? can't they be professing?
Perfect	V-ing perfect
can't I have professed? can't you have professed? can't he have professed? can't we have professed? can't you have professed? can't they have professed?	can't I have been professing? can't you have been professing? can't he have been professing? can't we have been professing? can't you have been professing? can't they have been professing?