English verb conjugation
CAN CRATER

Regular verb: crater - cratered - cratered

Affirmation

Simple form	V-ing form
I can crater you can crater he can crater we can crater you can crater they can crater	I can be cratering you can be cratering he can be cratering we can be cratering you can be cratering they can be cratering
Perfect	V-ing perfect
I can have cratered you can have cratered he can have cratered we can have cratered you can have cratered they can have cratered	I can have been cratering you can have been cratering he can have been cratering we can have been cratering you can have been cratering they can have been cratering

Negation

Simple form	V-ing form
I cannot crater you cannot crater he cannot crater we cannot crater you cannot crater they cannot crater	I cannot be cratering you cannot be cratering he cannot be cratering we cannot be cratering you cannot be cratering they cannot be cratering
Perfect	V-ing perfect
I cannot have cratered you cannot have cratered he cannot have cratered we cannot have cratered you cannot have cratered they cannot have cratered	I cannot have been cratering you cannot have been cratering he cannot have been cratering we cannot have been cratering you cannot have been cratering they cannot have been cratering

Interrogative form

Simple form	V-ing form
can I crater? can you crater? can he crater? can we crater? can you crater? can they crater?	can I be cratering? can you be cratering? can he be cratering? can we be cratering? can you be cratering? can they be cratering?
Perfect	V-ing perfect
can I have cratered? can you have cratered? can he have cratered? can we have cratered? can you have cratered? can they have cratered?	can I have been cratering? can you have been cratering? can he have been cratering? can we have been cratering? can you have been cratering? can they have been cratering?

Interro-negative form

Simple form	V-ing form
can I not crater? can you not crater? can he not crater? can we not crater? can you not crater? can they not crater?	can I not be cratering? can you not be cratering? can he not be cratering? can we not be cratering? can you not be cratering? can they not be cratering?
Perfect	V-ing perfect
can I not have cratered? can you not have cratered? can he not have cratered? can we not have cratered? can you not have cratered? can they not have cratered?	can I not have been cratering? can you not have been cratering? can he not have been cratering? can we not have been cratering? can you not have been cratering? can they not have been cratering?