C312322331333132212111133133313331333133312121111331331123231333132212121   >>    C31232233133313221211113313331333133313331212111133133112323133313221212   <<    C312322331333132212111133133313331333133312121111331331123231333132212123   >>      C312322331333132212111133133313331333133312121111331331123231333132212122   >>