B3311331313231311331322331333132333133313231332113313331333132321123111   >>    B331133131323131133132233133313233313331323133211331333133313232112311   <<    B3311331313231311331322331333132333133313231332113313331333132321123113   >>      B3311331313231311331322331333132333133313231332113313331333132321123112   >>