C1111233131211111211113313231333133313331323221211111133132311111   >>    C111123313121111121111331323133313331333132322121111113313231111   <<    C1111233131211111211113313231333133313331323221211111133132311113   >>      C1111233131211111211113313231333133313331323221211111133132311112   >>