English verb conjugation
CAN TAB

Regular verb: tab - tabed - tabed

Affirmation

Simple form	V-ing form
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
Perfect	V-ing perfect
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
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
Perfect	V-ing perfect
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
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?
Perfect	V-ing perfect
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
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?
Perfect	V-ing perfect
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?