B3311331313231311331322331333132333133313231332113313331333133312113313232131   >>    B331133131323131133132233133313233313331323133211331333133313331211331323213   <<    B3311331313231311331322331333132333133313231332113313331333133312113313232133   >>      B3311331313231311331322331333132333133313231332113313331333133312113313232132   >>