C1111233131211111211113313331333132213331311212111133132333133311231   >>    C111123313121111121111331333133313221333131121211113313233313331123   <<    C1111233131211111211113313331333132213331311212111133132333133311233   >>      C1111233131211111211113313331333132213331311212111133132333133311232   >>