English verb conjugation
MAY RIFFLE

Regular verb: riffle - riffled - riffled

Affirmation

Simple form	V-ing form
I may riffle you may riffle he may riffle we may riffle you may riffle they may riffle	I may be riffling you may be riffling he may be riffling we may be riffling you may be riffling they may be riffling
Perfect	V-ing perfect
I may have riffled you may have riffled he may have riffled we may have riffled you may have riffled they may have riffled	I may have been riffling you may have been riffling he may have been riffling we may have been riffling you may have been riffling they may have been riffling

Negation

Simple form	V-ing form
I mayn't riffle you mayn't riffle he mayn't riffle we mayn't riffle you mayn't riffle they mayn't riffle	I mayn't be riffling you mayn't be riffling he mayn't be riffling we mayn't be riffling you mayn't be riffling they mayn't be riffling
Perfect	V-ing perfect
I mayn't have riffled you mayn't have riffled he mayn't have riffled we mayn't have riffled you mayn't have riffled they mayn't have riffled	I mayn't have been riffling you mayn't have been riffling he mayn't have been riffling we mayn't have been riffling you mayn't have been riffling they mayn't have been riffling

Interrogative form

Simple form	V-ing form
may I riffle? may you riffle? may he riffle? may we riffle? may you riffle? may they riffle?	may I be riffling? may you be riffling? may he be riffling? may we be riffling? may you be riffling? may they be riffling?
Perfect	V-ing perfect
may I have riffled? may you have riffled? may he have riffled? may we have riffled? may you have riffled? may they have riffled?	may I have been riffling? may you have been riffling? may he have been riffling? may we have been riffling? may you have been riffling? may they have been riffling?

Interro-negative form

Simple form	V-ing form
mayn't I riffle? mayn't you riffle? mayn't he riffle? mayn't we riffle? mayn't you riffle? mayn't they riffle?	mayn't I be riffling? mayn't you be riffling? mayn't he be riffling? mayn't we be riffling? mayn't you be riffling? mayn't they be riffling?
Perfect	V-ing perfect
mayn't I have riffled? mayn't you have riffled? mayn't he have riffled? mayn't we have riffled? mayn't you have riffled? mayn't they have riffled?	mayn't I have been riffling? mayn't you have been riffling? mayn't he have been riffling? mayn't we have been riffling? mayn't you have been riffling? mayn't they have been riffling?