The first phase is the preparation. Not surprisingly, greeting words are frequently shown in this phase. In addition, we see that the interest of the staff was in preparing the lecture without any trouble, especially as to the acoustics.
The second phase is the time during the lecture. The result of this phase is similar to that of the previous analysis, because this phase dominates all four phases. The fact that the word ‘university’ frequently appears in the conversation reflects the fact that all the support staff focus on exchanging information about the condition of each classroom. The word ‘teacher’ is a part of class, the same as was previously explained.