C11112331312111112111133133313331333132313233313113313331322211   >>    C1111233131211111211113313331333133313231323331311331333132221   <<    C11112331312111112111133133313331333132313233313113313331322213   >>      C11112331312111112111133133313331333132313233313113313331322212   >>