I may harshen you may harshen he may harshen we may harshen you may harshen they may harshen
V-ing form
I may be harshening you may be harshening he may be harshening we may be harshening you may be harshening they may be harshening
Perfect
I may have harshened you may have harshened he may have harshened we may have harshened you may have harshened they may have harshened
V-ing perfect
I may have been harshening you may have been harshening he may have been harshening we may have been harshening you may have been harshening they may have been harshening
Negation
Simple form
I mayn't harshen you mayn't harshen he mayn't harshen we mayn't harshen you mayn't harshen they mayn't harshen
V-ing form
I mayn't be harshening you mayn't be harshening he mayn't be harshening we mayn't be harshening you mayn't be harshening they mayn't be harshening
Perfect
I mayn't have harshened you mayn't have harshened he mayn't have harshened we mayn't have harshened you mayn't have harshened they mayn't have harshened
V-ing perfect
I mayn't have been harshening you mayn't have been harshening he mayn't have been harshening we mayn't have been harshening you mayn't have been harshening they mayn't have been harshening
Interrogative form
Simple form
may I harshen? may you harshen? may he harshen? may we harshen? may you harshen? may they harshen?
V-ing form
may I be harshening? may you be harshening? may he be harshening? may we be harshening? may you be harshening? may they be harshening?
Perfect
may I have harshened? may you have harshened? may he have harshened? may we have harshened? may you have harshened? may they have harshened?
V-ing perfect
may I have been harshening? may you have been harshening? may he have been harshening? may we have been harshening? may you have been harshening? may they have been harshening?
Interro-negative form
Simple form
mayn't I harshen? mayn't you harshen? mayn't he harshen? mayn't we harshen? mayn't you harshen? mayn't they harshen?
V-ing form
mayn't I be harshening? mayn't you be harshening? mayn't he be harshening? mayn't we be harshening? mayn't you be harshening? mayn't they be harshening?
Perfect
mayn't I have harshened? mayn't you have harshened? mayn't he have harshened? mayn't we have harshened? mayn't you have harshened? mayn't they have harshened?
V-ing perfect
mayn't I have been harshening? mayn't you have been harshening? mayn't he have been harshening? mayn't we have been harshening? mayn't you have been harshening? mayn't they have been harshening?