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