English verb conjugation
CAN SLUB

Regular verb: slub - slubed - slubed

Affirmation

Simple form	V-ing form
I can slub you can slub he can slub we can slub you can slub they can slub	I can be slubing you can be slubing he can be slubing we can be slubing you can be slubing they can be slubing
Perfect	V-ing perfect
I can have slubed you can have slubed he can have slubed we can have slubed you can have slubed they can have slubed	I can have been slubing you can have been slubing he can have been slubing we can have been slubing you can have been slubing they can have been slubing

Negation

Simple form	V-ing form
I cannot slub you cannot slub he cannot slub we cannot slub you cannot slub they cannot slub	I cannot be slubing you cannot be slubing he cannot be slubing we cannot be slubing you cannot be slubing they cannot be slubing
Perfect	V-ing perfect
I cannot have slubed you cannot have slubed he cannot have slubed we cannot have slubed you cannot have slubed they cannot have slubed	I cannot have been slubing you cannot have been slubing he cannot have been slubing we cannot have been slubing you cannot have been slubing they cannot have been slubing

Interrogative form

Simple form	V-ing form
can I slub? can you slub? can he slub? can we slub? can you slub? can they slub?	can I be slubing? can you be slubing? can he be slubing? can we be slubing? can you be slubing? can they be slubing?
Perfect	V-ing perfect
can I have slubed? can you have slubed? can he have slubed? can we have slubed? can you have slubed? can they have slubed?	can I have been slubing? can you have been slubing? can he have been slubing? can we have been slubing? can you have been slubing? can they have been slubing?

Interro-negative form

Simple form	V-ing form
can I not slub? can you not slub? can he not slub? can we not slub? can you not slub? can they not slub?	can I not be slubing? can you not be slubing? can he not be slubing? can we not be slubing? can you not be slubing? can they not be slubing?
Perfect	V-ing perfect
can I not have slubed? can you not have slubed? can he not have slubed? can we not have slubed? can you not have slubed? can they not have slubed?	can I not have been slubing? can you not have been slubing? can he not have been slubing? can we not have been slubing? can you not have been slubing? can they not have been slubing?