I can caption you can caption he can caption we can caption you can caption they can caption
V-ing form
I can be captioning you can be captioning he can be captioning we can be captioning you can be captioning they can be captioning
Perfect
I can have captioned you can have captioned he can have captioned we can have captioned you can have captioned they can have captioned
V-ing perfect
I can have been captioning you can have been captioning he can have been captioning we can have been captioning you can have been captioning they can have been captioning
Negation
Simple form
I can't caption you can't caption he can't caption we can't caption you can't caption they can't caption
V-ing form
I can't be captioning you can't be captioning he can't be captioning we can't be captioning you can't be captioning they can't be captioning
Perfect
I can't have captioned you can't have captioned he can't have captioned we can't have captioned you can't have captioned they can't have captioned
V-ing perfect
I can't have been captioning you can't have been captioning he can't have been captioning we can't have been captioning you can't have been captioning they can't have been captioning
Interrogative form
Simple form
can I caption? can you caption? can he caption? can we caption? can you caption? can they caption?
V-ing form
can I be captioning? can you be captioning? can he be captioning? can we be captioning? can you be captioning? can they be captioning?
Perfect
can I have captioned? can you have captioned? can he have captioned? can we have captioned? can you have captioned? can they have captioned?
V-ing perfect
can I have been captioning? can you have been captioning? can he have been captioning? can we have been captioning? can you have been captioning? can they have been captioning?
Interro-negative form
Simple form
can't I caption? can't you caption? can't he caption? can't we caption? can't you caption? can't they caption?
V-ing form
can't I be captioning? can't you be captioning? can't he be captioning? can't we be captioning? can't you be captioning? can't they be captioning?
Perfect
can't I have captioned? can't you have captioned? can't he have captioned? can't we have captioned? can't you have captioned? can't they have captioned?
V-ing perfect
can't I have been captioning? can't you have been captioning? can't he have been captioning? can't we have been captioning? can't you have been captioning? can't they have been captioning?