English verb conjugation
CAN TOMB

Regular verb: tomb - tombed - tombed

Affirmation

Simple form	V-ing form
I can tomb you can tomb he can tomb we can tomb you can tomb they can tomb	I can be tombing you can be tombing he can be tombing we can be tombing you can be tombing they can be tombing
Perfect	V-ing perfect
I can have tombed you can have tombed he can have tombed we can have tombed you can have tombed they can have tombed	I can have been tombing you can have been tombing he can have been tombing we can have been tombing you can have been tombing they can have been tombing

Negation

Simple form	V-ing form
I cannot tomb you cannot tomb he cannot tomb we cannot tomb you cannot tomb they cannot tomb	I cannot be tombing you cannot be tombing he cannot be tombing we cannot be tombing you cannot be tombing they cannot be tombing
Perfect	V-ing perfect
I cannot have tombed you cannot have tombed he cannot have tombed we cannot have tombed you cannot have tombed they cannot have tombed	I cannot have been tombing you cannot have been tombing he cannot have been tombing we cannot have been tombing you cannot have been tombing they cannot have been tombing

Interrogative form

Simple form	V-ing form
can I tomb? can you tomb? can he tomb? can we tomb? can you tomb? can they tomb?	can I be tombing? can you be tombing? can he be tombing? can we be tombing? can you be tombing? can they be tombing?
Perfect	V-ing perfect
can I have tombed? can you have tombed? can he have tombed? can we have tombed? can you have tombed? can they have tombed?	can I have been tombing? can you have been tombing? can he have been tombing? can we have been tombing? can you have been tombing? can they have been tombing?

Interro-negative form

Simple form	V-ing form
can I not tomb? can you not tomb? can he not tomb? can we not tomb? can you not tomb? can they not tomb?	can I not be tombing? can you not be tombing? can he not be tombing? can we not be tombing? can you not be tombing? can they not be tombing?
Perfect	V-ing perfect
can I not have tombed? can you not have tombed? can he not have tombed? can we not have tombed? can you not have tombed? can they not have tombed?	can I not have been tombing? can you not have been tombing? can he not have been tombing? can we not have been tombing? can you not have been tombing? can they not have been tombing?