English verb conjugation
CAN CHUM

Regular verb: chum - chummed - chummed

Affirmation

Simple form	V-ing form
I can chum you can chum he can chum we can chum you can chum they can chum	I can be chumming you can be chumming he can be chumming we can be chumming you can be chumming they can be chumming
Perfect	V-ing perfect
I can have chummed you can have chummed he can have chummed we can have chummed you can have chummed they can have chummed	I can have been chumming you can have been chumming he can have been chumming we can have been chumming you can have been chumming they can have been chumming

Negation

Simple form	V-ing form
I cannot chum you cannot chum he cannot chum we cannot chum you cannot chum they cannot chum	I cannot be chumming you cannot be chumming he cannot be chumming we cannot be chumming you cannot be chumming they cannot be chumming
Perfect	V-ing perfect
I cannot have chummed you cannot have chummed he cannot have chummed we cannot have chummed you cannot have chummed they cannot have chummed	I cannot have been chumming you cannot have been chumming he cannot have been chumming we cannot have been chumming you cannot have been chumming they cannot have been chumming

Interrogative form

Simple form	V-ing form
can I chum? can you chum? can he chum? can we chum? can you chum? can they chum?	can I be chumming? can you be chumming? can he be chumming? can we be chumming? can you be chumming? can they be chumming?
Perfect	V-ing perfect
can I have chummed? can you have chummed? can he have chummed? can we have chummed? can you have chummed? can they have chummed?	can I have been chumming? can you have been chumming? can he have been chumming? can we have been chumming? can you have been chumming? can they have been chumming?

Interro-negative form

Simple form	V-ing form
can I not chum? can you not chum? can he not chum? can we not chum? can you not chum? can they not chum?	can I not be chumming? can you not be chumming? can he not be chumming? can we not be chumming? can you not be chumming? can they not be chumming?
Perfect	V-ing perfect
can I not have chummed? can you not have chummed? can he not have chummed? can we not have chummed? can you not have chummed? can they not have chummed?	can I not have been chumming? can you not have been chumming? can he not have been chumming? can we not have been chumming? can you not have been chumming? can they not have been chumming?