C111123313121111121111331333133313331333132232233131211113313113313231312321   >>    C11112331312111112111133133313331333133313223223313121111331311331323131232   <<    C111123313121111121111331333133313331333132232233131211113313113313231312323   >>      C111123313121111121111331333133313331333132232233131211113313113313231312322   >>