C312322331333132212111133133313331323133313331333133313331333133313311233112121   >>    C31232233133313221211113313331333132313331333133313331333133313331331123311212   <<    C312322331333132212111133133313331323133313331333133313331333133313311233112123   >>      C312322331333132212111133133313331323133313331333133313331333133313311233112122   >>