C11112331312111112111133133313331333133313223223313121111113313231333131121321   >>    C1111233131211111211113313331333133313331322322331312111111331323133313112132   <<    C11112331312111112111133133313331333133313223223313121111113313231333131121323   >>      C11112331312111112111133133313331333133313223223313121111113313231333131121322   >>