This produces 16 personality types as shown in the figure below.
As Kluckhohn and Murray 1948 noted, every person is like every other person in some regards; every person is like some other persons in some regards; and every person is unique in some ways.
Doctor of Philosophy Dissertation , Fielding Graduate University, Santa Barbara.
Another advantage of this test is that it considers 2 situations: 1 when things are going well and 2 in case of conflict.