{{explanation}}
On 2nd chord 1c change sides (1x,2).

1–
: 1M+2M turn RH ¾ to P's place and face out **while**{2} 1W casts down, 2W up | 1c (on M side) + 2c (W side) turn P LH {4} | 1W+2W turn RH **while**{2} 1M cast down and 2M up to (2x,1)
9–
: 2c+1c ½ R&L (to 1x,2) ; 1c+2c turn P RH 1½ to finish RHJ, 1c facing up, 2c down
17–
: 1c+2c singly dance Allemande for {6} to (2x,1) retaining RHJ | 1c+2c ¾ RHA, both W pivot inwards
25–
: 2M+1W (start up) & 1M+2W (start down) singly dance Allemande for {6}, retaining RHJ | All ¼ RHA, W turning inwards, to (2,1x)

{{explanation}}
Couples reaching top or bottom change sides while waiting.  
When all 4 couples are dancing, the middle allemandes interlink