1–
: 1c+2c+3c advance {1} and retire {1} | repeat ; ½ G-Chain, 1c starting across
9–
: Repeat [1–8], continuing the G-Chain (L,R,L)  (1,2,3)
17–
: 1c lead down {3}, up {3}, and cast off own side
25–
: 2c+1c+3c circle6 and back.