I may calve you may calve she may calve we may calve you may calve they may calve
V-ing form
I may be calving you may be calving she may be calving we may be calving you may be calving they may be calving
Perfect
I may have calved you may have calved she may have calved we may have calved you may have calved they may have calved
V-ing perfect
I may have been calving you may have been calving she may have been calving we may have been calving you may have been calving they may have been calving
Negation
Simple form
I mayn't calve you mayn't calve she mayn't calve we mayn't calve you mayn't calve they mayn't calve
V-ing form
I mayn't be calving you mayn't be calving she mayn't be calving we mayn't be calving you mayn't be calving they mayn't be calving
Perfect
I mayn't have calved you mayn't have calved she mayn't have calved we mayn't have calved you mayn't have calved they mayn't have calved
V-ing perfect
I mayn't have been calving you mayn't have been calving she mayn't have been calving we mayn't have been calving you mayn't have been calving they mayn't have been calving
Interrogative form
Simple form
may I calve? may you calve? may she calve? may we calve? may you calve? may they calve?
V-ing form
may I be calving? may you be calving? may she be calving? may we be calving? may you be calving? may they be calving?
Perfect
may I have calved? may you have calved? may she have calved? may we have calved? may you have calved? may they have calved?
V-ing perfect
may I have been calving? may you have been calving? may she have been calving? may we have been calving? may you have been calving? may they have been calving?
Interro-negative form
Simple form
mayn't I calve? mayn't you calve? mayn't she calve? mayn't we calve? mayn't you calve? mayn't they calve?
V-ing form
mayn't I be calving? mayn't you be calving? mayn't she be calving? mayn't we be calving? mayn't you be calving? mayn't they be calving?
Perfect
mayn't I have calved? mayn't you have calved? mayn't she have calved? mayn't we have calved? mayn't you have calved? mayn't they have calved?
V-ing perfect
mayn't I have been calving? mayn't you have been calving? mayn't she have been calving? mayn't we have been calving? mayn't you have been calving? mayn't they have been calving?