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