English verb conjugation
CAN GRABBLE

Regular verb: grabble - grabbled - grabbled

Affirmation

Simple form	V-ing form
I can grabble you can grabble he can grabble we can grabble you can grabble they can grabble	I can be grabbling you can be grabbling he can be grabbling we can be grabbling you can be grabbling they can be grabbling
Perfect	V-ing perfect
I can have grabbled you can have grabbled he can have grabbled we can have grabbled you can have grabbled they can have grabbled	I can have been grabbling you can have been grabbling he can have been grabbling we can have been grabbling you can have been grabbling they can have been grabbling

Negation

Simple form	V-ing form
I cannot grabble you cannot grabble he cannot grabble we cannot grabble you cannot grabble they cannot grabble	I cannot be grabbling you cannot be grabbling he cannot be grabbling we cannot be grabbling you cannot be grabbling they cannot be grabbling
Perfect	V-ing perfect
I cannot have grabbled you cannot have grabbled he cannot have grabbled we cannot have grabbled you cannot have grabbled they cannot have grabbled	I cannot have been grabbling you cannot have been grabbling he cannot have been grabbling we cannot have been grabbling you cannot have been grabbling they cannot have been grabbling

Interrogative form

Simple form	V-ing form
can I grabble? can you grabble? can he grabble? can we grabble? can you grabble? can they grabble?	can I be grabbling? can you be grabbling? can he be grabbling? can we be grabbling? can you be grabbling? can they be grabbling?
Perfect	V-ing perfect
can I have grabbled? can you have grabbled? can he have grabbled? can we have grabbled? can you have grabbled? can they have grabbled?	can I have been grabbling? can you have been grabbling? can he have been grabbling? can we have been grabbling? can you have been grabbling? can they have been grabbling?

Interro-negative form

Simple form	V-ing form
can I not grabble? can you not grabble? can he not grabble? can we not grabble? can you not grabble? can they not grabble?	can I not be grabbling? can you not be grabbling? can he not be grabbling? can we not be grabbling? can you not be grabbling? can they not be grabbling?
Perfect	V-ing perfect
can I not have grabbled? can you not have grabbled? can he not have grabbled? can we not have grabbled? can you not have grabbled? can they not have grabbled?	can I not have been grabbling? can you not have been grabbling? can he not have been grabbling? can we not have been grabbling? can you not have been grabbling? can they not have been grabbling?