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