C312322331333132212111133133313331333133312121111331333231311212121   >>    C31232233133313221211113313331333133313331212111133133323131121212   <<    C312322331333132212111133133313331333133312121111331333231311212123   >>      C312322331333132212111133133313331333133312121111331333231311212122   >>