English verb conjugation
CAN POST

Regular verb: post - posted - posted

Affirmation

Simple form	V-ing form
I can post you can post he can post we can post you can post they can post	I can be posting you can be posting he can be posting we can be posting you can be posting they can be posting
Perfect	V-ing perfect
I can have posted you can have posted he can have posted we can have posted you can have posted they can have posted	I can have been posting you can have been posting he can have been posting we can have been posting you can have been posting they can have been posting

Negation

Simple form	V-ing form
I can't post you can't post he can't post we can't post you can't post they can't post	I can't be posting you can't be posting he can't be posting we can't be posting you can't be posting they can't be posting
Perfect	V-ing perfect
I can't have posted you can't have posted he can't have posted we can't have posted you can't have posted they can't have posted	I can't have been posting you can't have been posting he can't have been posting we can't have been posting you can't have been posting they can't have been posting

Interrogative form

Simple form	V-ing form
can I post? can you post? can he post? can we post? can you post? can they post?	can I be posting? can you be posting? can he be posting? can we be posting? can you be posting? can they be posting?
Perfect	V-ing perfect
can I have posted? can you have posted? can he have posted? can we have posted? can you have posted? can they have posted?	can I have been posting? can you have been posting? can he have been posting? can we have been posting? can you have been posting? can they have been posting?

Interro-negative form

Simple form	V-ing form
can't I post? can't you post? can't he post? can't we post? can't you post? can't they post?	can't I be posting? can't you be posting? can't he be posting? can't we be posting? can't you be posting? can't they be posting?
Perfect	V-ing perfect
can't I have posted? can't you have posted? can't he have posted? can't we have posted? can't you have posted? can't they have posted?	can't I have been posting? can't you have been posting? can't he have been posting? can't we have been posting? can't you have been posting? can't they have been posting?