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