Insert the hook into the center of the gusset. Work 81 (81, 84, 90, 93) SCs around the armhole.
Hint: Mark the shoulder seam and find the halfway point between the center of the gusset and the shoulder seam and mark with a pin. Work half the number needed and work the same number to the shoulder seam. Do the same process from there to the center of the gusset. Do not turn.