English verb conjugation
CAN SUBSCRIBE

Regular verb: subscribe - subscribed - subscribed

Affirmation

Simple form	V-ing form
I can subscribe you can subscribe he can subscribe we can subscribe you can subscribe they can subscribe	I can be subscribing you can be subscribing he can be subscribing we can be subscribing you can be subscribing they can be subscribing
Perfect	V-ing perfect
I can have subscribed you can have subscribed he can have subscribed we can have subscribed you can have subscribed they can have subscribed	I can have been subscribing you can have been subscribing he can have been subscribing we can have been subscribing you can have been subscribing they can have been subscribing

Negation

Simple form	V-ing form
I can't subscribe you can't subscribe he can't subscribe we can't subscribe you can't subscribe they can't subscribe	I can't be subscribing you can't be subscribing he can't be subscribing we can't be subscribing you can't be subscribing they can't be subscribing
Perfect	V-ing perfect
I can't have subscribed you can't have subscribed he can't have subscribed we can't have subscribed you can't have subscribed they can't have subscribed	I can't have been subscribing you can't have been subscribing he can't have been subscribing we can't have been subscribing you can't have been subscribing they can't have been subscribing

Interrogative form

Simple form	V-ing form
can I subscribe? can you subscribe? can he subscribe? can we subscribe? can you subscribe? can they subscribe?	can I be subscribing? can you be subscribing? can he be subscribing? can we be subscribing? can you be subscribing? can they be subscribing?
Perfect	V-ing perfect
can I have subscribed? can you have subscribed? can he have subscribed? can we have subscribed? can you have subscribed? can they have subscribed?	can I have been subscribing? can you have been subscribing? can he have been subscribing? can we have been subscribing? can you have been subscribing? can they have been subscribing?

Interro-negative form

Simple form	V-ing form
can't I subscribe? can't you subscribe? can't he subscribe? can't we subscribe? can't you subscribe? can't they subscribe?	can't I be subscribing? can't you be subscribing? can't he be subscribing? can't we be subscribing? can't you be subscribing? can't they be subscribing?
Perfect	V-ing perfect
can't I have subscribed? can't you have subscribed? can't he have subscribed? can't we have subscribed? can't you have subscribed? can't they have subscribed?	can't I have been subscribing? can't you have been subscribing? can't he have been subscribing? can't we have been subscribing? can't you have been subscribing? can't they have been subscribing?