1-8
: All circle 8H round to left, 1s & 4s end in centre (1s facing down & 4s
  up) as 2s & 3s end in original places
9-16
: 1s & 4s set & change places RH with opp person, 1M followed by partner
  dances up behind Men to 2nd place in centre of dance **while** 4L
  followed by partner dances down behind Ladies to 3rd place in centre
17-24
: 1s & 4s circle 4H round to left, face up/down, set & set advancing to
  change places & end BtoB
25-32
: 4s & 1s dance out ends of set (4s up, 1s down), cast 1 place on opposite
  sides & turn partners 2H 1.1/2 times to own sides
33-40
: All dance Grand Chain. 2 4 1 3