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