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