English verb conjugation
CAN TAB

Regular verb: tab - tabed - tabed

Affirmation

Simple form	V-ing form
I can tab you can tab he can tab we can tab you can tab they can tab	I can be tabing you can be tabing he 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 he 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 he 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 can't tab you can't tab he can't tab we can't tab you can't tab they can't tab	I can't be tabing you can't be tabing he can't be tabing we can't be tabing you can't be tabing they can't be tabing
Perfect	V-ing perfect
I can't have tabed you can't have tabed he can't have tabed we can't have tabed you can't have tabed they can't have tabed	I can't have been tabing you can't have been tabing he can't have been tabing we can't have been tabing you can't have been tabing they can't have been tabing

Interrogative form

Simple form	V-ing form
can I tab? can you tab? can he tab? can we tab? can you tab? can they tab?	can I be tabing? can you be tabing? can he 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 he 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 he 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't I tab? can't you tab? can't he tab? can't we tab? can't you tab? can't they tab?	can't I be tabing? can't you be tabing? can't he be tabing? can't we be tabing? can't you be tabing? can't they be tabing?
Perfect	V-ing perfect
can't I have tabed? can't you have tabed? can't he have tabed? can't we have tabed? can't you have tabed? can't they have tabed?	can't I have been tabing? can't you have been tabing? can't he have been tabing? can't we have been tabing? can't you have been tabing? can't they have been tabing?