B3311331313231311331322331333132313233313231333131123313331323221123313111221   >>    B331133131323131133132233133313231323331323133313112331333132322112331311122   <<    B3311331313231311331322331333132313233313231333131123313331323221123313111223   >>      B3311331313231311331322331333132313233313231333131123313331323221123313111222   >>