can contact
Regular verb: contact - contacted- contacted

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