can tab
Regular verb: tab - tabed- tabed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can tab
you can tab
she can tab
we can tab
you can tab
they can tab 	I can be tabing
you can be tabing
she can be tabing
we can be tabing
you can be tabing
they can be tabing	I can have tabed
you can have tabed
she can have tabed
we can have tabed
you can have tabed
they can have tabed	I can have been tabing
you can have been tabing
she can have been tabing
we can have been tabing
you can have been tabing
they can have been tabing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I cannot tab
you cannot tab
she cannot tab
we cannot tab
you cannot tab
they cannot tab 	I cannot be tabing
you cannot be tabing
she cannot be tabing
we cannot be tabing
you cannot be tabing
they cannot be tabing	I cannot have tabed
you cannot have tabed
she cannot have tabed
we cannot have tabed
you cannot have tabed
they cannot have tabed	I cannot have been tabing
you cannot have been tabing
she cannot have been tabing
we cannot have been tabing
you cannot have been tabing
they cannot have been tabing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I tab?
can you tab?
can she tab?
can we tab?
can you tab?
can they tab? 	can I be tabing?
can you be tabing?
can she be tabing?
can we be tabing?
can you be tabing?
can they be tabing? 	can I have tabed?
can you have tabed?
can she have tabed?
can we have tabed?
can you have tabed?
can they have tabed? 	can I have been tabing?
can you have been tabing?
can she have been tabing?
can we have been tabing?
can you have been tabing?
can they have been tabing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I not tab?
can you not tab?
can she not tab?
can we not tab?
can you not tab?
can they not tab? 	can I not be tabing?
can you not be tabing?
can she not be tabing?
can we not be tabing?
can you not be tabing?
can they not be tabing? 	can I not have tabed?
can you not have tabed?
can she not have tabed?
can we not have tabed?
can you not have tabed?
can they not have tabed? 	can I not have been tabing?
can you not have been tabing?
can she not have been tabing?
can we not have been tabing?
can you not have been tabing?
can they not have been tabing?