B3311331313231311331322331333132333133313231332113313331333133323132212131   >>    B331133131323131133132233133313233313331323133211331333133313332313221213   <<    B3311331313231311331322331333132333133313231332113313331333133323132212133   >>      B3311331313231311331322331333132333133313231332113313331333133323132212132   >>