can click
Regular verb: click - clicked- clicked

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can click
you can click
he can click
we can click
you can click
they can click 	I can be clicking
you can be clicking
he can be clicking
we can be clicking
you can be clicking
they can be clicking	I can have clicked
you can have clicked
he can have clicked
we can have clicked
you can have clicked
they can have clicked	I can have been clicking
you can have been clicking
he can have been clicking
we can have been clicking
you can have been clicking
they can have been clicking	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I cannot click
you cannot click
he cannot click
we cannot click
you cannot click
they cannot click 	I cannot be clicking
you cannot be clicking
he cannot be clicking
we cannot be clicking
you cannot be clicking
they cannot be clicking	I cannot have clicked
you cannot have clicked
he cannot have clicked
we cannot have clicked
you cannot have clicked
they cannot have clicked	I cannot have been clicking
you cannot have been clicking
he cannot have been clicking
we cannot have been clicking
you cannot have been clicking
they cannot have been clicking	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I click?
can you click?
can he click?
can we click?
can you click?
can they click? 	can I be clicking?
can you be clicking?
can he be clicking?
can we be clicking?
can you be clicking?
can they be clicking? 	can I have clicked?
can you have clicked?
can he have clicked?
can we have clicked?
can you have clicked?
can they have clicked? 	can I have been clicking?
can you have been clicking?
can he have been clicking?
can we have been clicking?
can you have been clicking?
can they have been clicking? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I not click?
can you not click?
can he not click?
can we not click?
can you not click?
can they not click? 	can I not be clicking?
can you not be clicking?
can he not be clicking?
can we not be clicking?
can you not be clicking?
can they not be clicking? 	can I not have clicked?
can you not have clicked?
can he not have clicked?
can we not have clicked?
can you not have clicked?
can they not have clicked? 	can I not have been clicking?
can you not have been clicking?
can he not have been clicking?
can we not have been clicking?
can you not have been clicking?
can they not have been clicking?