“O” is Exclusively heterosexual with no homosexual.  ”!” is Predominantly heterosexual only incidentally homosexual.  ”2″ is  Predominantly heterosexual but more than  incidentally homosexual.  ”3″ is Equally heterosexual and homosexual.  ”4″ is Predominantly homosexual but more than  incidentally heterosexual.  ”5″ is Predominantly homosexual only incidentally heterosexual.  ”6″ is Exclusively homosexual with no heterosexual.