C312322331333132212111133133313331333133312121111123231333131223312311   >>    C31232233133313221211113313331333133313331212111112323133313122331231   <<    C312322331333132212111133133313331333133312121111123231333131223312313   >>      C312322331333132212111133133313331333133312121111123231333131223312312   >>