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 can't crater you can't crater he can't crater we can't crater you can't crater they can't crater	I can't be cratering you can't be cratering he can't be cratering we can't be cratering you can't be cratering they can't be cratering
Perfect	V-ing perfect
I can't have cratered you can't have cratered he can't have cratered we can't have cratered you can't have cratered they can't have cratered	I can't have been cratering you can't have been cratering he can't have been cratering we can't have been cratering you can't have been cratering they can't 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't I crater? can't you crater? can't he crater? can't we crater? can't you crater? can't they crater?	can't I be cratering? can't you be cratering? can't he be cratering? can't we be cratering? can't you be cratering? can't they be cratering?
Perfect	V-ing perfect
can't I have cratered? can't you have cratered? can't he have cratered? can't we have cratered? can't you have cratered? can't they have cratered?	can't I have been cratering? can't you have been cratering? can't he have been cratering? can't we have been cratering? can't you have been cratering? can't they have been cratering?