I may refasten you may refasten he may refasten we may refasten you may refasten they may refasten
V-ing form
I may be refastening you may be refastening he may be refastening we may be refastening you may be refastening they may be refastening
Perfect
I may have refastened you may have refastened he may have refastened we may have refastened you may have refastened they may have refastened
V-ing perfect
I may have been refastening you may have been refastening he may have been refastening we may have been refastening you may have been refastening they may have been refastening
Negation
Simple form
I mayn't refasten you mayn't refasten he mayn't refasten we mayn't refasten you mayn't refasten they mayn't refasten
V-ing form
I mayn't be refastening you mayn't be refastening he mayn't be refastening we mayn't be refastening you mayn't be refastening they mayn't be refastening
Perfect
I mayn't have refastened you mayn't have refastened he mayn't have refastened we mayn't have refastened you mayn't have refastened they mayn't have refastened
V-ing perfect
I mayn't have been refastening you mayn't have been refastening he mayn't have been refastening we mayn't have been refastening you mayn't have been refastening they mayn't have been refastening
Interrogative form
Simple form
may I refasten? may you refasten? may he refasten? may we refasten? may you refasten? may they refasten?
V-ing form
may I be refastening? may you be refastening? may he be refastening? may we be refastening? may you be refastening? may they be refastening?
Perfect
may I have refastened? may you have refastened? may he have refastened? may we have refastened? may you have refastened? may they have refastened?
V-ing perfect
may I have been refastening? may you have been refastening? may he have been refastening? may we have been refastening? may you have been refastening? may they have been refastening?
Interro-negative form
Simple form
mayn't I refasten? mayn't you refasten? mayn't he refasten? mayn't we refasten? mayn't you refasten? mayn't they refasten?
V-ing form
mayn't I be refastening? mayn't you be refastening? mayn't he be refastening? mayn't we be refastening? mayn't you be refastening? mayn't they be refastening?
Perfect
mayn't I have refastened? mayn't you have refastened? mayn't he have refastened? mayn't we have refastened? mayn't you have refastened? mayn't they have refastened?
V-ing perfect
mayn't I have been refastening? mayn't you have been refastening? mayn't he have been refastening? mayn't we have been refastening? mayn't you have been refastening? mayn't they have been refastening?