C11112331333132311331333133313331333112211231211111133131133132232321   >>    C1111233133313231133133313331333133311221123121111113313113313223232   <<    C11112331333132311331333133313331333112211231211111133131133132232323   >>      C11112331333132311331333133313331333112211231211111133131133132232322   >>