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 can't grabble you can't grabble he can't grabble we can't grabble you can't grabble they can't grabble	I can't be grabbling you can't be grabbling he can't be grabbling we can't be grabbling you can't be grabbling they can't be grabbling
Perfect	V-ing perfect
I can't have grabbled you can't have grabbled he can't have grabbled we can't have grabbled you can't have grabbled they can't have grabbled	I can't have been grabbling you can't have been grabbling he can't have been grabbling we can't have been grabbling you can't have been grabbling they can't 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't I grabble? can't you grabble? can't he grabble? can't we grabble? can't you grabble? can't they grabble?	can't I be grabbling? can't you be grabbling? can't he be grabbling? can't we be grabbling? can't you be grabbling? can't they be grabbling?
Perfect	V-ing perfect
can't I have grabbled? can't you have grabbled? can't he have grabbled? can't we have grabbled? can't you have grabbled? can't they have grabbled?	can't I have been grabbling? can't you have been grabbling? can't he have been grabbling? can't we have been grabbling? can't you have been grabbling? can't they have been grabbling?