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