English verb conjugation
CAN CLATTER

Regular verb: clatter - clattered - clattered

Affirmation

Simple form	V-ing form
I can clatter you can clatter he can clatter we can clatter you can clatter they can clatter	I can be clattering you can be clattering he can be clattering we can be clattering you can be clattering they can be clattering
Perfect	V-ing perfect
I can have clattered you can have clattered he can have clattered we can have clattered you can have clattered they can have clattered	I can have been clattering you can have been clattering he can have been clattering we can have been clattering you can have been clattering they can have been clattering

Negation

Simple form	V-ing form
I can't clatter you can't clatter he can't clatter we can't clatter you can't clatter they can't clatter	I can't be clattering you can't be clattering he can't be clattering we can't be clattering you can't be clattering they can't be clattering
Perfect	V-ing perfect
I can't have clattered you can't have clattered he can't have clattered we can't have clattered you can't have clattered they can't have clattered	I can't have been clattering you can't have been clattering he can't have been clattering we can't have been clattering you can't have been clattering they can't have been clattering

Interrogative form

Simple form	V-ing form
can I clatter? can you clatter? can he clatter? can we clatter? can you clatter? can they clatter?	can I be clattering? can you be clattering? can he be clattering? can we be clattering? can you be clattering? can they be clattering?
Perfect	V-ing perfect
can I have clattered? can you have clattered? can he have clattered? can we have clattered? can you have clattered? can they have clattered?	can I have been clattering? can you have been clattering? can he have been clattering? can we have been clattering? can you have been clattering? can they have been clattering?

Interro-negative form

Simple form	V-ing form
can't I clatter? can't you clatter? can't he clatter? can't we clatter? can't you clatter? can't they clatter?	can't I be clattering? can't you be clattering? can't he be clattering? can't we be clattering? can't you be clattering? can't they be clattering?
Perfect	V-ing perfect
can't I have clattered? can't you have clattered? can't he have clattered? can't we have clattered? can't you have clattered? can't they have clattered?	can't I have been clattering? can't you have been clattering? can't he have been clattering? can't we have been clattering? can't you have been clattering? can't they have been clattering?