{{explanation}}
3s &4s start on opp sides

1-8
: 1s & 4s 1/2 turn 2H in middle (1s facing down, 4s up) & join hands with
  2s/3s, all set then advance 1 step & retire
9-16
: 1s & 4s dance reel of 4 down/up middle with Ladies passing LSh to start
  as partners set & Men dance LSh round each other then pass other Lady
  RSh to meet partner & turn RH 1.1/4 times to face 2s/3s (Man facing
  Lady)
17-24
: 1s+2s also 4s+3s dance reels of 4 across & 1s end 2nd place opposite
  sides as 4s end 3rd place own sides
25-32
: 1s+4s Set+Link & circle 4H round to left. 2 4(1)(3)