C312322331333132212111133133313331333131133113313331333132112312312121   >>    C31232233133313221211113313331333133313113311331333133313211231231212   <<    C312322331333132212111133133313331333131133113313331333132112312312123   >>      C312322331333132212111133133313331333131133113313331333132112312312122   >>