B3311331313231311331322331333132313331322331323133313331323332121121   >>    B331133131323131133132233133313231333132233132313331333132333212112   <<    B3311331313231311331322331333132313331322331323133313331323332121123   >>      B3311331313231311331322331333132313331322331323133313331323332121122   >>