C1111233131211111211113313331333133313232321333133313121133132323323131   >>    C111123313121111121111331333133313331323232133313331312113313232332313   <<    C1111233131211111211113313331333133313232321333133313121133132323323133   >>      C1111233131211111211113313331333133313232321333133313121133132323323132   >>