C312322331333132212111133133313331333133312121111331333131311311331323123121   >>    C31232233133313221211113313331333133313331212111133133313131131133132312312   <<    C312322331333132212111133133313331333133312121111331333131311311331323123123   >>      C312322331333132212111133133313331333133312121111331333131311311331323123122   >>