C312322331333132212111133133313331333133312121111331333113313131221   >>    C31232233133313221211113313331333133313331212111133133311331313122   <<    C312322331333132212111133133313331333133312121111331333113313131223   >>      C312322331333132212111133133313331333133312121111331333113313131222   >>