B3311331313231311331322331333132313331322331323133313311211113323211221   >>    B331133131323131133132233133313231333132233132313331331121111332321122   <<    B3311331313231311331322331333132313331322331323133313311211113323211223   >>      B3311331313231311331322331333132313331322331323133313311211113323211222   >>