An elementary school is arranging students\textquotesingle{} schedules. For the first class in the morning, it has to be Chinese or Maths or English. Students won\textquotesingle t start the day with the same class for two days in a row. If Wednesday starts with Chinese, then Thursday can start with~\uline{~~~~~~~~~~}~. 
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Students won\textquotesingle t start the day with the same class for two days in a row. 