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