C312322331333132212111133133313331323132322331333133313112211232322231   >>    C31232233133313221211113313331333132313232233133313331311221123232223   <<    C312322331333132212111133133313331323132322331333133313112211232322233   >>      C312322331333132212111133133313331323132322331333133313112211232322232   >>