C312322331333132212111133133313331323133313221211111211111211331311233112123231   >>    C31232233133313221211113313331333132313331322121111121111121133131123311212323   <<    C312322331333132212111133133313331323133313221211111211111211331311233112123233   >>      C312322331333132212111133133313331323133313221211111211111211331311233112123232   >>