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