B3311331313231311331322331333132313331323133211331333133313223313111221   >>    B331133131323131133132233133313231333132313321133133313331322331311122   <<    B3311331313231311331322331333132313331323133211331333133313223313111223   >>      B3311331313231311331322331333132313331323133211331333133313223313111222   >>