Regular verb: scan - scanned - scanned
Simple form | V-ing form |
I could scan you could scan she could scan we could scan you could scan they could scan | I could be scanning you could be scanning she could be scanning we could be scanning you could be scanning they could be scanning |
Perfect | V-ing perfect |
I could have scanned you could have scanned she could have scanned we could have scanned you could have scanned they could have scanned | I could have been scanning you could have been scanning she could have been scanning we could have been scanning you could have been scanning they could have been scanning |
Simple form | V-ing form |
I couldn't scan you couldn't scan she couldn't scan we couldn't scan you couldn't scan they couldn't scan | I couldn't be scanning you couldn't be scanning she couldn't be scanning we couldn't be scanning you couldn't be scanning they couldn't be scanning |
Perfect | V-ing perfect |
I couldn't have scanned you couldn't have scanned she couldn't have scanned we couldn't have scanned you couldn't have scanned they couldn't have scanned | I couldn't have been scanning you couldn't have been scanning she couldn't have been scanning we couldn't have been scanning you couldn't have been scanning they couldn't have been scanning |
Simple form | V-ing form |
could I scan? could you scan? could she scan? could we scan? could you scan? could they scan? | could I be scanning? could you be scanning? could she be scanning? could we be scanning? could you be scanning? could they be scanning? |
Perfect | V-ing perfect |
could I have scanned? could you have scanned? could she have scanned? could we have scanned? could you have scanned? could they have scanned? | could I have been scanning? could you have been scanning? could she have been scanning? could we have been scanning? could you have been scanning? could they have been scanning? |
Simple form | V-ing form |
couldn't I scan? couldn't you scan? couldn't she scan? couldn't we scan? couldn't you scan? couldn't they scan? | couldn't I be scanning? couldn't you be scanning? couldn't she be scanning? couldn't we be scanning? couldn't you be scanning? couldn't they be scanning? |
Perfect | V-ing perfect |
couldn't I have scanned? couldn't you have scanned? couldn't she have scanned? couldn't we have scanned? couldn't you have scanned? couldn't they have scanned? | couldn't I have been scanning? couldn't you have been scanning? couldn't she have been scanning? couldn't we have been scanning? couldn't you have been scanning? couldn't they have been scanning? |