English verb conjugation
MAY TUMBLE

Regular verb: tumble - tumbled - tumbled

Affirmation

Simple form	V-ing form
I may tumble you may tumble he may tumble we may tumble you may tumble they may tumble	I may be tumbling you may be tumbling he may be tumbling we may be tumbling you may be tumbling they may be tumbling
Perfect	V-ing perfect
I may have tumbled you may have tumbled he may have tumbled we may have tumbled you may have tumbled they may have tumbled	I may have been tumbling you may have been tumbling he may have been tumbling we may have been tumbling you may have been tumbling they may have been tumbling

Negation

Simple form	V-ing form
I mayn't tumble you mayn't tumble he mayn't tumble we mayn't tumble you mayn't tumble they mayn't tumble	I mayn't be tumbling you mayn't be tumbling he mayn't be tumbling we mayn't be tumbling you mayn't be tumbling they mayn't be tumbling
Perfect	V-ing perfect
I mayn't have tumbled you mayn't have tumbled he mayn't have tumbled we mayn't have tumbled you mayn't have tumbled they mayn't have tumbled	I mayn't have been tumbling you mayn't have been tumbling he mayn't have been tumbling we mayn't have been tumbling you mayn't have been tumbling they mayn't have been tumbling

Interrogative form

Simple form	V-ing form
may I tumble? may you tumble? may he tumble? may we tumble? may you tumble? may they tumble?	may I be tumbling? may you be tumbling? may he be tumbling? may we be tumbling? may you be tumbling? may they be tumbling?
Perfect	V-ing perfect
may I have tumbled? may you have tumbled? may he have tumbled? may we have tumbled? may you have tumbled? may they have tumbled?	may I have been tumbling? may you have been tumbling? may he have been tumbling? may we have been tumbling? may you have been tumbling? may they have been tumbling?

Interro-negative form

Simple form	V-ing form
mayn't I tumble? mayn't you tumble? mayn't he tumble? mayn't we tumble? mayn't you tumble? mayn't they tumble?	mayn't I be tumbling? mayn't you be tumbling? mayn't he be tumbling? mayn't we be tumbling? mayn't you be tumbling? mayn't they be tumbling?
Perfect	V-ing perfect
mayn't I have tumbled? mayn't you have tumbled? mayn't he have tumbled? mayn't we have tumbled? mayn't you have tumbled? mayn't they have tumbled?	mayn't I have been tumbling? mayn't you have been tumbling? mayn't he have been tumbling? mayn't we have been tumbling? mayn't you have been tumbling? mayn't they have been tumbling?