Regular verb: lock - locked - locked
Simple form | V-ing form |
I could lock you could lock he could lock we could lock you could lock they could lock | I could be locking you could be locking he could be locking we could be locking you could be locking they could be locking |
Perfect | V-ing perfect |
I could have locked you could have locked he could have locked we could have locked you could have locked they could have locked | I could have been locking you could have been locking he could have been locking we could have been locking you could have been locking they could have been locking |
Simple form | V-ing form |
I couldn't lock you couldn't lock he couldn't lock we couldn't lock you couldn't lock they couldn't lock | I couldn't be locking you couldn't be locking he couldn't be locking we couldn't be locking you couldn't be locking they couldn't be locking |
Perfect | V-ing perfect |
I couldn't have locked you couldn't have locked he couldn't have locked we couldn't have locked you couldn't have locked they couldn't have locked | I couldn't have been locking you couldn't have been locking he couldn't have been locking we couldn't have been locking you couldn't have been locking they couldn't have been locking |
Simple form | V-ing form |
could I lock? could you lock? could he lock? could we lock? could you lock? could they lock? | could I be locking? could you be locking? could he be locking? could we be locking? could you be locking? could they be locking? |
Perfect | V-ing perfect |
could I have locked? could you have locked? could he have locked? could we have locked? could you have locked? could they have locked? | could I have been locking? could you have been locking? could he have been locking? could we have been locking? could you have been locking? could they have been locking? |
Simple form | V-ing form |
couldn't I lock? couldn't you lock? couldn't he lock? couldn't we lock? couldn't you lock? couldn't they lock? | couldn't I be locking? couldn't you be locking? couldn't he be locking? couldn't we be locking? couldn't you be locking? couldn't they be locking? |
Perfect | V-ing perfect |
couldn't I have locked? couldn't you have locked? couldn't he have locked? couldn't we have locked? couldn't you have locked? couldn't they have locked? | couldn't I have been locking? couldn't you have been locking? couldn't he have been locking? couldn't we have been locking? couldn't you have been locking? couldn't they have been locking? |