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