I may stair-step you may stair-step he may stair-step we may stair-step you may stair-step they may stair-step
V-ing form
I may be stair-steping you may be stair-steping he may be stair-steping we may be stair-steping you may be stair-steping they may be stair-steping
Perfect
I may have stair-steped you may have stair-steped he may have stair-steped we may have stair-steped you may have stair-steped they may have stair-steped
V-ing perfect
I may have been stair-steping you may have been stair-steping he may have been stair-steping we may have been stair-steping you may have been stair-steping they may have been stair-steping
Negation
Simple form
I mayn't stair-step you mayn't stair-step he mayn't stair-step we mayn't stair-step you mayn't stair-step they mayn't stair-step
V-ing form
I mayn't be stair-steping you mayn't be stair-steping he mayn't be stair-steping we mayn't be stair-steping you mayn't be stair-steping they mayn't be stair-steping
Perfect
I mayn't have stair-steped you mayn't have stair-steped he mayn't have stair-steped we mayn't have stair-steped you mayn't have stair-steped they mayn't have stair-steped
V-ing perfect
I mayn't have been stair-steping you mayn't have been stair-steping he mayn't have been stair-steping we mayn't have been stair-steping you mayn't have been stair-steping they mayn't have been stair-steping
Interrogative form
Simple form
may I stair-step? may you stair-step? may he stair-step? may we stair-step? may you stair-step? may they stair-step?
V-ing form
may I be stair-steping? may you be stair-steping? may he be stair-steping? may we be stair-steping? may you be stair-steping? may they be stair-steping?
Perfect
may I have stair-steped? may you have stair-steped? may he have stair-steped? may we have stair-steped? may you have stair-steped? may they have stair-steped?
V-ing perfect
may I have been stair-steping? may you have been stair-steping? may he have been stair-steping? may we have been stair-steping? may you have been stair-steping? may they have been stair-steping?
Interro-negative form
Simple form
mayn't I stair-step? mayn't you stair-step? mayn't he stair-step? mayn't we stair-step? mayn't you stair-step? mayn't they stair-step?
V-ing form
mayn't I be stair-steping? mayn't you be stair-steping? mayn't he be stair-steping? mayn't we be stair-steping? mayn't you be stair-steping? mayn't they be stair-steping?
Perfect
mayn't I have stair-steped? mayn't you have stair-steped? mayn't he have stair-steped? mayn't we have stair-steped? mayn't you have stair-steped? mayn't they have stair-steped?
V-ing perfect
mayn't I have been stair-steping? mayn't you have been stair-steping? mayn't he have been stair-steping? mayn't we have been stair-steping? mayn't you have been stair-steping? mayn't they have been stair-steping?