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