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