C1111233131211111211113313331333133313311211111133133313331323312231   >>    C111123313121111121111331333133313331331121111113313331333132331223   <<    C1111233131211111211113313331333133313311211111133133313331323312233   >>      C1111233131211111211113313331333133313311211111133133313331323312232   >>