English verb conjugation
CAN CONTACT

Regular verb: contact - contacted - contacted

Affirmation

Simple form	V-ing form
I can contact you can contact she can contact we can contact you can contact they can contact	I can be contacting you can be contacting she can be contacting we can be contacting you can be contacting they can be contacting
Perfect	V-ing perfect
I can have contacted you can have contacted she can have contacted we can have contacted you can have contacted they can have contacted	I can have been contacting you can have been contacting she can have been contacting we can have been contacting you can have been contacting they can have been contacting

Negation

Simple form	V-ing form
I can't contact you can't contact she can't contact we can't contact you can't contact they can't contact	I can't be contacting you can't be contacting she can't be contacting we can't be contacting you can't be contacting they can't be contacting
Perfect	V-ing perfect
I can't have contacted you can't have contacted she can't have contacted we can't have contacted you can't have contacted they can't have contacted	I can't have been contacting you can't have been contacting she can't have been contacting we can't have been contacting you can't have been contacting they can't have been contacting

Interrogative form

Simple form	V-ing form
can I contact? can you contact? can she contact? can we contact? can you contact? can they contact?	can I be contacting? can you be contacting? can she be contacting? can we be contacting? can you be contacting? can they be contacting?
Perfect	V-ing perfect
can I have contacted? can you have contacted? can she have contacted? can we have contacted? can you have contacted? can they have contacted?	can I have been contacting? can you have been contacting? can she have been contacting? can we have been contacting? can you have been contacting? can they have been contacting?

Interro-negative form

Simple form	V-ing form
can't I contact? can't you contact? can't she contact? can't we contact? can't you contact? can't they contact?	can't I be contacting? can't you be contacting? can't she be contacting? can't we be contacting? can't you be contacting? can't they be contacting?
Perfect	V-ing perfect
can't I have contacted? can't you have contacted? can't she have contacted? can't we have contacted? can't you have contacted? can't they have contacted?	can't I have been contacting? can't you have been contacting? can't she have been contacting? can't we have been contacting? can't you have been contacting? can't they have been contacting?