{{explanation}}
Part A

1–
: All C circle8 and back
9–
: 1W+2W+3W+4W RHA, holding P LH ; all C veer right NHJ to bring M to the middle for LHA back to places, M holding P RH.
17–
: All C set to partners twice ; turn partners once BH, to finish facing partners in original places
25–40
: All C G-Chain (2 skip change par hand) to own places, finishing facing the centre (no polite turn)

{{explanation}}
Part B

1–
: 1W moves to centre, and dances alone (any suitable reel steps) **while{8}** 1M+2c+3c+4c circle7 and back
9–
: 1W sets to and turns P BH ; sets to and turns opposite M (3M) BH
17–
: 1W+1M+3M Reel3, 1W starts with Lsh to 1M, 1W stays in the centre at the end
25–
: Repeat bars 1–8
33–
: 1W sets to and turns M on right (4M) BH ; sets to and turns opposite M (2M) BH
41–
: 1W+4M+2M Reel3, 1W starts with Lsh to 4M, at the end 1W resumes her original place, and 2W moves into the centre

{{explanation}}
Repeat part B 7 times, with 2W, 3W, 4W, 1M, ... 4M each in turn in the centre. On bars 9- the W/M in the centre first sets to the P, then to the opposite M/W. In bars 33- the W/M first sets to the M/W on the L (seen from inside) of her/his original position, then the M/W opposite.  
repeat part A