 In other situations, however, the opposite appears to be the case.For example, the group / of six homophones, all in Middle Chinese and divided into a group of four with one phonetic and a group of two with a different phonetic, splits so that the first group of four is all pronounced ' (tone 2) and the second group of two is pronounced ' (tone 4).In such situations like this, it may be that only one of the characters in each group normally occurs in speech with an identifiable tone, and as a result, a "reading pronunciation" of the other characters was constructed based on the phonetic element of the character.