C111123313121111121111331333133313331333133313331333131133132313231111   >>    C11112331312111112111133133313331333133313331333133313113313231323111   <<    C111123313121111121111331333133313331333133313331333131133132313231113   >>      C111123313121111121111331333133313331333133313331333131133132313231112   >>