Irregular verb: undo - undid - undone
Simple form | V-ing form |
I could undo you could undo he could undo we could undo you could undo they could undo | I could be undoing you could be undoing he could be undoing we could be undoing you could be undoing they could be undoing |
Perfect | V-ing perfect |
I could have undone you could have undone he could have undone we could have undone you could have undone they could have undone | I could have been undoing you could have been undoing he could have been undoing we could have been undoing you could have been undoing they could have been undoing |
Simple form | V-ing form |
I couldn't undo you couldn't undo he couldn't undo we couldn't undo you couldn't undo they couldn't undo | I couldn't be undoing you couldn't be undoing he couldn't be undoing we couldn't be undoing you couldn't be undoing they couldn't be undoing |
Perfect | V-ing perfect |
I couldn't have undone you couldn't have undone he couldn't have undone we couldn't have undone you couldn't have undone they couldn't have undone | I couldn't have been undoing you couldn't have been undoing he couldn't have been undoing we couldn't have been undoing you couldn't have been undoing they couldn't have been undoing |
Simple form | V-ing form |
could I undo? could you undo? could he undo? could we undo? could you undo? could they undo? | could I be undoing? could you be undoing? could he be undoing? could we be undoing? could you be undoing? could they be undoing? |
Perfect | V-ing perfect |
could I have undone? could you have undone? could he have undone? could we have undone? could you have undone? could they have undone? | could I have been undoing? could you have been undoing? could he have been undoing? could we have been undoing? could you have been undoing? could they have been undoing? |
Simple form | V-ing form |
couldn't I undo? couldn't you undo? couldn't he undo? couldn't we undo? couldn't you undo? couldn't they undo? | couldn't I be undoing? couldn't you be undoing? couldn't he be undoing? couldn't we be undoing? couldn't you be undoing? couldn't they be undoing? |
Perfect | V-ing perfect |
couldn't I have undone? couldn't you have undone? couldn't he have undone? couldn't we have undone? couldn't you have undone? couldn't they have undone? | couldn't I have been undoing? couldn't you have been undoing? couldn't he have been undoing? couldn't we have been undoing? couldn't you have been undoing? couldn't they have been undoing? |