English verb conjugation MUST SEEM

Regular verb: seem - seemed - seemed

Affirmation

Simple form

-
-
it must seem
-
-
-

V-ing form

-
-
it must be seeming
-
-
-

Perfect

-
-
it must have seemed
-
-
-

V-ing perfect

-
-
it must have been seeming
-
-
-

Simple form

-
-
it must not seem
-
-
-

V-ing form

-
-
it must not be seeming
-
-
-

Perfect

-
-
it must not have seemed
-
-
-

V-ing perfect

-
-
it must not have been seeming
-
-
-

Simple form

-
-
must it seem?
-
-
-

V-ing form

-
-
must it be seeming?
-
-
-

Perfect

-
-
must it have seemed?
-
-
-

V-ing perfect

-
-
must it have been seeming?
-
-
-

Simple form

-
-
must it not seem?
-
-
-

V-ing form

-
-
must it not be seeming?
-
-
-

Perfect

-
-
must it not have seemed?
-
-
-

V-ing perfect

-
-
must it not have been seeming?
-
-
-