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