Erraid

1–: 1c & 3c Fig8 round side couples on own side & end facing P
9–: 1c+3c & 2c+4c interlocking R&L: all start RH across the set, then LH up/down ; repeat [9–12] & all end facing P
17–: Set and Cast Away: all set to P | M cast away to next W place clw while{2} all W dance to next M place clw & turn to face the place they just left ; repeat from new places & end facing P (4,1,2,3)
25–: All turn P RH & face cnr ; dance BtoB with cnr starting LSh (4,1,2,3); Longer instructions are at https://my.strathspey.org/u/murrough/Erraid.pdf