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