1-8
: 1L+3M set & turn RH 1.1/2 times, dance out thru others pl & cast to
  partners place **while** (bar 5) 1M+3L set & turn LH to face partner
  (in diag line)
9-16
: 1s+3s set to partners & turn RH & end in partners original place then 2s
  set & turn LH into diag line facing 1st corners (2M faces 1L & 2L
  faces 3M)
17-24
: 2s+1L+3M dance 1/2 reel of 4 with 1st corners & 1/2 reel with 2nd
  corners (2s+3s end in centre for Diamond Poussette)
25-32
: 2s+3s dance 1/2 Diamond Poussette, 3s+1s dance 1/2 Diamond Poussette

{{explanation}}
Note: Name I'Anson pronounced "Eye-Anson" with emphasis on "An"