I could photoscan you could photoscan he could photoscan we could photoscan you could photoscan they could photoscan
V-ing form
I could be photoscaning you could be photoscaning he could be photoscaning we could be photoscaning you could be photoscaning they could be photoscaning
Perfect
I could have photoscaned you could have photoscaned he could have photoscaned we could have photoscaned you could have photoscaned they could have photoscaned
V-ing perfect
I could have been photoscaning you could have been photoscaning he could have been photoscaning we could have been photoscaning you could have been photoscaning they could have been photoscaning
Negation
Simple form
I could not photoscan you could not photoscan he could not photoscan we could not photoscan you could not photoscan they could not photoscan
V-ing form
I could not be photoscaning you could not be photoscaning he could not be photoscaning we could not be photoscaning you could not be photoscaning they could not be photoscaning
Perfect
I could not have photoscaned you could not have photoscaned he could not have photoscaned we could not have photoscaned you could not have photoscaned they could not have photoscaned
V-ing perfect
I could not have been photoscaning you could not have been photoscaning he could not have been photoscaning we could not have been photoscaning you could not have been photoscaning they could not have been photoscaning
Interrogative form
Simple form
could I photoscan? could you photoscan? could he photoscan? could we photoscan? could you photoscan? could they photoscan?
V-ing form
could I be photoscaning? could you be photoscaning? could he be photoscaning? could we be photoscaning? could you be photoscaning? could they be photoscaning?
Perfect
could I have photoscaned? could you have photoscaned? could he have photoscaned? could we have photoscaned? could you have photoscaned? could they have photoscaned?
V-ing perfect
could I have been photoscaning? could you have been photoscaning? could he have been photoscaning? could we have been photoscaning? could you have been photoscaning? could they have been photoscaning?
Interro-negative form
Simple form
could I not photoscan? could you not photoscan? could he not photoscan? could we not photoscan? could you not photoscan? could they not photoscan?
V-ing form
could I not be photoscaning? could you not be photoscaning? could he not be photoscaning? could we not be photoscaning? could you not be photoscaning? could they not be photoscaning?
Perfect
could I not have photoscaned? could you not have photoscaned? could he not have photoscaned? could we not have photoscaned? could you not have photoscaned? could they not have photoscaned?
V-ing perfect
could I not have been photoscaning? could you not have been photoscaning? could he not have been photoscaning? could we not have been photoscaning? could you not have been photoscaning? could they not have been photoscaning?