C11112331312111112111133132313331333133313233313331333132211121   >>    C1111233131211111211113313231333133313331323331333133313221112   <<    C11112331312111112111133132313331333133313233313331333132211123   >>      C11112331312111112111133132313331333133313233313331333132211122   >>