B3311331313231311331322331333132313331322331323133313331323132222331322121   >>    B331133131323131133132233133313231333132233132313331333132313222233132212   <<    B3311331313231311331322331333132313331322331323133313331323132222331322123   >>      B3311331313231311331322331333132313331322331323133313331323132222331322122   >>