English verb conjugation
MAY PROP

Regular verb: prop - propped - propped

Affirmation

Simple form	V-ing form
I may prop you may prop he may prop we may prop you may prop they may prop	I may be propping you may be propping he may be propping we may be propping you may be propping they may be propping
Perfect	V-ing perfect
I may have propped you may have propped he may have propped we may have propped you may have propped they may have propped	I may have been propping you may have been propping he may have been propping we may have been propping you may have been propping they may have been propping

Negation

Simple form	V-ing form
I mayn't prop you mayn't prop he mayn't prop we mayn't prop you mayn't prop they mayn't prop	I mayn't be propping you mayn't be propping he mayn't be propping we mayn't be propping you mayn't be propping they mayn't be propping
Perfect	V-ing perfect
I mayn't have propped you mayn't have propped he mayn't have propped we mayn't have propped you mayn't have propped they mayn't have propped	I mayn't have been propping you mayn't have been propping he mayn't have been propping we mayn't have been propping you mayn't have been propping they mayn't have been propping

Interrogative form

Simple form	V-ing form
may I prop? may you prop? may he prop? may we prop? may you prop? may they prop?	may I be propping? may you be propping? may he be propping? may we be propping? may you be propping? may they be propping?
Perfect	V-ing perfect
may I have propped? may you have propped? may he have propped? may we have propped? may you have propped? may they have propped?	may I have been propping? may you have been propping? may he have been propping? may we have been propping? may you have been propping? may they have been propping?

Interro-negative form

Simple form	V-ing form
mayn't I prop? mayn't you prop? mayn't he prop? mayn't we prop? mayn't you prop? mayn't they prop?	mayn't I be propping? mayn't you be propping? mayn't he be propping? mayn't we be propping? mayn't you be propping? mayn't they be propping?
Perfect	V-ing perfect
mayn't I have propped? mayn't you have propped? mayn't he have propped? mayn't we have propped? mayn't you have propped? mayn't they have propped?	mayn't I have been propping? mayn't you have been propping? mayn't he have been propping? mayn't we have been propping? mayn't you have been propping? mayn't they have been propping?