C11112331312111112111133132313331333133313233313331312111133133313331312132211   >>    C1111233131211111211113313231333133313331323331333131211113313331333131213221   <<    C11112331312111112111133132313331333133313233313331312111133133313331312132213   >>      C11112331312111112111133132313331333133313233313331312111133133313331312132212   >>