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