The instruction reads:
Sleeves
cast on 27 sts
inc 1 st at each end of needle on 5th and every following 4th row 3 times, then on evey following 6th row 3 times to 41 sts, taking inc sts into pat.
The pat repeats every 8 rows.
This is how I understand it:
Row 1, 2, 3, 4, 5(inc 1 st), 6, 7, 8
Row 1, 2, 3, 4(inc 1 st), 5(inc 1 st), 6, 7, 8
Row 1, 2, 3, 4(inc 1 st), 5(inc 1 st), 6, 7, 8
Row 1, 2, 3, 4(inc 1 st), 5, 6(inc 1 st), 7, 8
Row 1, 2, 3, 4, 5, 6(inc 1 st), 7, 8
Row 1, 2, 3, 4, 5, 6(inc 1 st), 7, 8
27 sts + 9 sts = 36 sts!
Where’re those 5 sts?