http://www.sec.gov/Archives/edgar/data/764764/000076476418000100/finalpricingsupp5-21.htm
http://www.sec.gov/Archives/edgar/data/839923/000104746918003996/a2235822z424b2.htm
http://www.sec.gov/Archives/edgar/data/1000275/000114036118025330/form424b2.htm
http://www.sec.gov/Archives/edgar/data/1000275/000114036118025397/form424b2.htm
http://www.sec.gov/Archives/edgar/data/1522616/000119312518171714/d524027d424b2.htm
http://www.sec.gov/Archives/edgar/data/1512762/000119312518172207/d591936d424b5.htm