C312322331333132212111133133313331333133312121111112133313231121121   >>    C31232233133313221211113313331333133313331212111111213331323112112   <<    C312322331333132212111133133313331333133312121111112133313231121123   >>      C312322331333132212111133133313331333133312121111112133313231121122   >>