http://www.sec.gov/Archives/edgar/data/811156/000110465916116989/a16-9852_1424b2.htm
http://www.sec.gov/Archives/edgar/data/4969/000110465916117186/a16-10396_2424b2.htm
http://www.sec.gov/Archives/edgar/data/1000275/000114036116062862/form424b2.htm
http://www.sec.gov/Archives/edgar/data/1000275/000114036116062877/form424b2.htm
http://www.sec.gov/Archives/edgar/data/1000275/000114036116062908/form424b2.htm
http://www.sec.gov/Archives/edgar/data/1000275/000114036116062963/form424b2.htm
http://www.sec.gov/Archives/edgar/data/1000275/000114036116062991/form424b2.htm
http://www.sec.gov/Archives/edgar/data/1000275/000114036116063082/form424b2.htm
http://www.sec.gov/Archives/edgar/data/1376227/000117120016000209/i00288_ung-424b3.htm
http://www.sec.gov/Archives/edgar/data/1479247/000117120016000210/i00289_usag-424b3.htm
http://www.sec.gov/Archives/edgar/data/1396878/000117120016000211/i00284_uga-424b3.htm
http://www.sec.gov/Archives/edgar/data/1479247/000117120016000212/i00286_cper-424b3.htm
http://www.sec.gov/Archives/edgar/data/1405528/000117120016000213/i00291_usl-424b3.htm
http://www.sec.gov/Archives/edgar/data/1396877/000117120016000214/i00287_uhn-424b3.htm
http://www.sec.gov/Archives/edgar/data/1472494/000117120016000215/i00285_bno-424b3.htm
http://www.sec.gov/Archives/edgar/data/1479247/000117120016000216/i00290_usci-424b3.htm