input:
array (
  'chris_shiflett' => 'Chris Shiflett',
  'sherry_schlossnagle' => 'Sherry Schlossnagle',
  'ciprian_tutu' => 'Ciprian Tutu',
  'robert_treat' => 'Robert Treat',
  'alex_mikitik' => 'Alex Mikitik',
  'joe_svezia' => 'Joe Svezia',
  'marina_bernstein' => 'Marina Bernstein',
  'mike_hillyer' => 'Mike Hillyer',
  'john_schulz' => 'John Schulz',
  'leon_fayer' => 'Leon Fayer',
  'greg_chiasson' => 'Greg Chiasson',
  'alexey_toptygin' => 'Alexey Toptygin',
  'alejandro_garcia' => 'Alejandro Garcia',
  'sergey_ivanov' => 'Sergey Ivanov',
  'alec_peterson' => 'Alec Peterson',
  'andi_marini' => 'Andi Marini',
  'ben_litton' => 'Ben Litton',
  'wez_furlong' => 'Wez Furlong',
  'laura_thomson' => 'Laura Thomson',
  'david_gray' => 'David Gray',
  'jon_sippel' => 'Jon Sippel',
  'anthony_gilbert' => 'Anthony Gilbert',
  'george_schlossnagle' => 'George Schlossnagle',
  'justin_berman' => 'Justin Berman',
  'dai_swengler' => 'Dai Swengler',
  'kim_matz' => 'Kim Matz',
  'theo_schlossnagle' => 'Theo Schlossnagle',
  'erin_jackson' => 'Erin Jackson',
  'brian_dunavant' => 'Brian Dunavant',
  'barry_abel' => 'Barry Abel',
  'katherine_jeschke' => 'Katherine Jeschke',
  'lisa_schlossnagle' => 'Lisa Schlossnagle',
  'eric_sproul' => 'Eric Sproul',
);


output:
array (
  'lisa_schlossnagle' => 'Lisa Schlossnagle',
  'sherry_schlossnagle' => 'Sherry Schlossnagle',
  'justin_berman' => 'Justin Berman',
  'ciprian_tutu' => 'Ciprian Tutu',
  'david_gray' => 'David Gray',
  'robert_treat' => 'Robert Treat',
  'erin_jackson' => 'Erin Jackson',
  'alex_mikitik' => 'Alex Mikitik',
  'wez_furlong' => 'Wez Furlong',
  'joe_svezia' => 'Joe Svezia',
  'anthony_gilbert' => 'Anthony Gilbert',
  'marina_bernstein' => 'Marina Bernstein',
  'kim_matz' => 'Kim Matz',
  'mike_hillyer' => 'Mike Hillyer',
  'barry_abel' => 'Barry Abel',
  'john_schulz' => 'John Schulz',
  'chris_shiflett' => 'Chris Shiflett',
  'leon_fayer' => 'Leon Fayer',
  'laura_thomson' => 'Laura Thomson',
  'greg_chiasson' => 'Greg Chiasson',
  'jon_sippel' => 'Jon Sippel',
  'alexey_toptygin' => 'Alexey Toptygin',
  'george_schlossnagle' => 'George Schlossnagle',
  'alejandro_garcia' => 'Alejandro Garcia',
  'dai_swengler' => 'Dai Swengler',
  'sergey_ivanov' => 'Sergey Ivanov',
  'theo_schlossnagle' => 'Theo Schlossnagle',
  'alec_peterson' => 'Alec Peterson',
  'brian_dunavant' => 'Brian Dunavant',
  'andi_marini' => 'Andi Marini',
  'katherine_jeschke' => 'Katherine Jeschke',
  'ben_litton' => 'Ben Litton',
  'eric_sproul' => 'Eric Sproul',
);