instruction: Using the following text, extract the last 3 CEO's. Place them in a bullet list in order of current to least current.
context: Governors/Chief Executive Officers
  The following individuals have been appointed to serve as chief executive of the Commonwealth Bank of Australia, or precursor titles:
  
  Order	Name	Title	Term start	Term end	Time in office
  1	Sir Denison Miller KCMG	Governor	June 1912	June 1923	11 years, 29 days
  2	James Kell	June 1923	October 1926	3 years, 122 days
  3	Sir Ernest Riddle	October 1926	February 1938	11 years, 121 days
  4	Sir Harry Sheehan CBE	March 1938	March 1941	3 years, 0 days
  5	Hugh Traill Armitage CMG	July 1941	December 1948	7 years, 183 days
  6	Dr H. C. Coombs	January 1949	January 1960	11 years, 0 days
  7	Ernest Richardson CBE	Managing Director	January 1960	March 1965	5 years, 89 days
  8	Sir Bede Callaghan CBE	May 1965	August 1976	11 years, 92 days
  9	Sir Ronald Elliott	August 1976	August 1981	5 years, 0 days
  10	Vern Christie AO	August 1981	March 1987	5 years, 212 days
  11	Donald Sanders AO CB	March 1987	December 1990	3 years, 275 days
  Chief Executive Officer	January 1991	June 1992	1 year, 181 days
  12	David Murray AO	June 1992	September 2005	13 years, 92 days
  13	Sir Ralph Norris KNZM	September 2005	November 2011	6 years, 29 days
  14	Ian Narev	December 2011	April 2018	11 years, 119 days
  15	Matt Comyn	April 2018	incumbent	4 years, 355 days
response: * Matt Comyn - Current / Incumbent since April 2018
  * Ian Narev - December 2011 to April 2018
  * Sir Ralph Norris KNZM - September 2005 to November 2011
  * David Murray AO - June 1992  to September 2005