C312322331333132212111133133313331333133112111113232233133311231   >>    C31232233133313221211113313331333133313311211111323223313331123   <<    C312322331333132212111133133313331333133112111113232233133311233   >>      C312322331333132212111133133313331333133112111113232233133311232   >>