Dance Our Lady of the Snows 5122

*Start (1,2,3x,4x)*

1–
: 1c+4c set | turn BH to finish W facing out ; 1c+4c (M following W) cast inwards (2c+3c step to end), and pass Lsh round the other couple into 
9–
: 4c+2W & 1c+3W RHA ; 4c+2M & 1c+3M LHA, finish 4c+1c NHJ facing closest end and 2M & 3M facing out (2,4,1x,3x)
17–
: 4c+1c dance NHJ to end and cast back while{4} 2c+3c dance in one place and return NHJ to end (2,4,1x,3x) ; 4c+1c Circle4 L
25–
: All Circle8 L {2} | Set with HJ ; chase L {1} and cast cclw to starting places (2,4,1x,3x)

*3c+4c start on opp sides [two chords]*

1–4
: 1c set | turn BH to fin in ctr, 1W facing out, 1M behind 1W **while** 4c dance likewise [4W face out]
5–8
: 1W (followed by 1M) casts off [2c up], dances across towards M's side and then down the middle
  **while** 4W (followed by 4M) casts up [3c down], dances across towards W's side and then up the middle
  [1c and 4c pass LS]
9–
: 4c dance RH across with 2W **while** 1c dance RH across with 3W ;
  4c dance LH across with 2M **while** 1c dance LH across with 3M
  [4c fin facing up in 2pl, NH joined; 1c fin facing down in 3pl, NH joined; 2M & 3M fin facing out]
17–20
: 2c dance down sides to 2pl | dance up NH to 1pl
  **while** 4c dance up to 1pl | cast off to 2pl own sides
  **while** 1c dance down to 4pl | cast up to 3pl opp sides
  **while** 3c dance up sides to 3pl | dance down NH to 4pl
21–24
: 4c+1c [center couples] Circle4 to L
25–
: All Circle8 to L {2} | S retaining hands ; chase to L {1} and cast back to own sides {3}

{{explanation}}
2 chords - 3s & 4s cross to opp sides on 2nd chord

1-8
: 1s & 4s set to partners, turn 2H, 1L followed by partner casts behind 2L
  & dances round other couple LSh to face 3L **while** 4L followed by
  partner casts up behind 3L, round other couple to face 2L
9-16
: 4s+2L also 1s+3L dance RH & LH across 2M/3M, 4s end facing up in 2nd
  place, 1s facing down in 3rd place & 2M & 3M face out
17-20
: 4s & 1s dance out ends & cast to 2nd/3rd pl **while** 2s & 3s dance
  down/up sides 1 place then dance in & 2s dance up to 1st place, 3s
  down to 4th place
21-24
: 4s+1s circle 4H round to left
25-32
: All circle left for 2 steps, set, drop hands & dance 1 more step to left
  & cast back anticlockwise to places. 2 4 (1)(3)