B3311331313231311331322331333132313331322331323133313112211231311311   >>    B331133131323131133132233133313231333132233132313331311221123131131   <<    B3311331313231311331322331333132313331322331323133313112211231311313   >>      B3311331313231311331322331333132313331322331323133313112211231311312   >>