C111123313121111121111331333133313331333131121133133313331333132322133313221211   >>    C11112331312111112111133133313331333133313112113313331333133313232213331322121   <<    C111123313121111121111331333133313331333131121133133313331333132322133313221213   >>      C111123313121111121111331333133313331333131121133133313331333132322133313221212   >>