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