C11112331312111112111133133313331333132313233313331311331323113322121   >>    C1111233131211111211113313331333133313231323331333131133132311332212   <<    C11112331312111112111133133313331333132313233313331311331323113322123   >>      C11112331312111112111133133313331333132313233313331311331323113322122   >>