B3311331313231311331322331333132313331322331323133313233313232213111221   >>    B331133131323131133132233133313231333132233132313331323331323221311122   <<    B3311331313231311331322331333132313331322331323133313233313232213111223   >>      B3311331313231311331322331333132313331322331323133313233313232213111222   >>