C11112331312111112111133133313331333132313233313331323221312111   >>    C1111233131211111211113313331333133313231323331333132322131211   <<    C11112331312111112111133133313331333132313233313331323221312113   >>      C11112331312111112111133133313331333132313233313331323221312112   >>