Dance The Lass from Brittany 16901

1-
: 1c turn RH | cast off (2c up) ; turn LH 1¼ to face 2cnrs
9-
: ½ Reel4 on 2diag. 1c pass P RSh to face 3cnrs ; ½ Reel4 on 1diag into lines3 across, 1M between 3c at top, 1W between 2c
17-
: 1c ½ Fig8 RSh round 1cnrs[pos] to exchanged places ; turn LH 1¼ to face 2cnrs[pos]
25-
: ½ LSh Reel4 on 2diag. 1c pass P LSh to face 1cnrs[pos] ; ½ LSh Reel4 on 1diag. 1c pass P LSh to 2pl (2,1,3)
33-
: All chase cclw ½ ; 1c turn LH 1½ **while{4}** 3c+2c chase cclw ½ (2,1,3)

1–8
: 1s RHT and cast, 1s RHT 1¼ to face 2nd corners
9–16
: 1s ½ Diag RSh reel of 4 with 2nd corners, pass R to face 3rd corners, ½ Diag RSh reel of 4 with 3rd corners finish with 1M facing down between 3s, 1W facing up between 2s.
17–24
: 1s change places by dancing to Left out between 2s & 3s & finish 1M facing up between 2s, 1W facing down between 3s
  1s LHT 1¼ to face 2nd corner positions
25–32
: 1s ½ Diag LSh reel of 4 with 2nd corner positions, pass L to face 1st  corner positions, ½ Diag LSh reel of 4 with 1st  corner positions, 2M & 3W finish by curving to Rt to face ACW. 1s pass LSh to 2nd place own sides facing ACW.
33–40
: All chase ACW for 4 bars, 1s LHT 1½ as 2s & 3s chase to place, finish 2,1,3.

1-8
: 1s turn RH, cast (2s step up); 1s turn 1.1/4 RH to face 2nd corners
9-16
: 1s+2nd corners dance 1/2 diag reel of 4, 1s pass RSh to face 3rd
  corners; 1s+3rd corners dance 1/2 diag reel of 4. End 1M between 3s
  (at top) facing down, 1L between 2s facing up
17-24
: 1s dance RSh round 1st corner (pstn) to change ends & turn 1.1/4 LH to
  face 2nd corners (pstn)
25-32
: 1s+corners dance 1/2 LSh diag reel of 4, 1s pass LSh to face 1st corner
  (pstn); 1s+corners dance 1/2 LSh diag reel of 4, 1s pass LSh to 2nd
  place own side
33-40
: 2s+1s+3s chase anticlockwise 1/2 round; 1s turn 1.1/2 LH to own side as
  2s+3s continue chase to own sides. 2 1 3