I may bump-start you may bump-start he may bump-start we may bump-start you may bump-start they may bump-start
V-ing form
I may be bump-starting you may be bump-starting he may be bump-starting we may be bump-starting you may be bump-starting they may be bump-starting
Perfect
I may have bump-started you may have bump-started he may have bump-started we may have bump-started you may have bump-started they may have bump-started
V-ing perfect
I may have been bump-starting you may have been bump-starting he may have been bump-starting we may have been bump-starting you may have been bump-starting they may have been bump-starting
Negation
Simple form
I mayn't bump-start you mayn't bump-start he mayn't bump-start we mayn't bump-start you mayn't bump-start they mayn't bump-start
V-ing form
I mayn't be bump-starting you mayn't be bump-starting he mayn't be bump-starting we mayn't be bump-starting you mayn't be bump-starting they mayn't be bump-starting
Perfect
I mayn't have bump-started you mayn't have bump-started he mayn't have bump-started we mayn't have bump-started you mayn't have bump-started they mayn't have bump-started
V-ing perfect
I mayn't have been bump-starting you mayn't have been bump-starting he mayn't have been bump-starting we mayn't have been bump-starting you mayn't have been bump-starting they mayn't have been bump-starting
Interrogative form
Simple form
may I bump-start? may you bump-start? may he bump-start? may we bump-start? may you bump-start? may they bump-start?
V-ing form
may I be bump-starting? may you be bump-starting? may he be bump-starting? may we be bump-starting? may you be bump-starting? may they be bump-starting?
Perfect
may I have bump-started? may you have bump-started? may he have bump-started? may we have bump-started? may you have bump-started? may they have bump-started?
V-ing perfect
may I have been bump-starting? may you have been bump-starting? may he have been bump-starting? may we have been bump-starting? may you have been bump-starting? may they have been bump-starting?
Interro-negative form
Simple form
mayn't I bump-start? mayn't you bump-start? mayn't he bump-start? mayn't we bump-start? mayn't you bump-start? mayn't they bump-start?
V-ing form
mayn't I be bump-starting? mayn't you be bump-starting? mayn't he be bump-starting? mayn't we be bump-starting? mayn't you be bump-starting? mayn't they be bump-starting?
Perfect
mayn't I have bump-started? mayn't you have bump-started? mayn't he have bump-started? mayn't we have bump-started? mayn't you have bump-started? mayn't they have bump-started?
V-ing perfect
mayn't I have been bump-starting? mayn't you have been bump-starting? mayn't he have been bump-starting? mayn't we have been bump-starting? mayn't you have been bump-starting? mayn't they have been bump-starting?