I should liaise you should liaise she should liaise we should liaise you should liaise they should liaise
V-ing form
I should be liaising you should be liaising she should be liaising we should be liaising you should be liaising they should be liaising
Perfect
I should have liaised you should have liaised she should have liaised we should have liaised you should have liaised they should have liaised
V-ing perfect
I should have been liaising you should have been liaising she should have been liaising we should have been liaising you should have been liaising they should have been liaising
Negation
Simple form
I should not liaise you should not liaise she should not liaise we should not liaise you should not liaise they should not liaise
V-ing form
I should not be liaising you should not be liaising she should not be liaising we should not be liaising you should not be liaising they should not be liaising
Perfect
I should not have liaised you should not have liaised she should not have liaised we should not have liaised you should not have liaised they should not have liaised
V-ing perfect
I should not have been liaising you should not have been liaising she should not have been liaising we should not have been liaising you should not have been liaising they should not have been liaising
Interrogative form
Simple form
should I liaise? should you liaise? should she liaise? should we liaise? should you liaise? should they liaise?
V-ing form
should I be liaising? should you be liaising? should she be liaising? should we be liaising? should you be liaising? should they be liaising?
Perfect
should I have liaised? should you have liaised? should she have liaised? should we have liaised? should you have liaised? should they have liaised?
V-ing perfect
should I have been liaising? should you have been liaising? should she have been liaising? should we have been liaising? should you have been liaising? should they have been liaising?
Interro-negative form
Simple form
should I not liaise? should you not liaise? should she not liaise? should we not liaise? should you not liaise? should they not liaise?
V-ing form
should I not be liaising? should you not be liaising? should she not be liaising? should we not be liaising? should you not be liaising? should they not be liaising?
Perfect
should I not have liaised? should you not have liaised? should she not have liaised? should we not have liaised? should you not have liaised? should they not have liaised?
V-ing perfect
should I not have been liaising? should you not have been liaising? should she not have been liaising? should we not have been liaising? should you not have been liaising? should they not have been liaising?