Book "Fitted Knits" working on textured tunic, need help with understanding the directions on the sleeves?

Hi, I am working on the Textured Tunic w/ Side Buttons from the book "Fitted Knits" by Stefanie Japel. I am working on the sleeves right now.. Sleeves Transfer 36 held sts of one sleeve to needle.do not join. Knit 1 RS row. Work 12 rows in Box Stitch, Dec 1 st at beg of each row -- 24 sts. work... show more Hi, I am working on the Textured Tunic w/ Side Buttons from the book "Fitted Knits" by Stefanie Japel.
I am working on the sleeves right now..
Sleeves
Transfer 36 held sts of one sleeve to needle.do not join. Knit 1 RS row.

Work 12 rows in Box Stitch, Dec 1 st at beg of each row -- 24 sts.
work even in box stitch for 14 more rows, ending with WS row.

ok so heres my problem..
I trasfered the sts, knitted 1 RS row.
when i start to work the box stitch, dec 1 st at beg of each row...
i end up with odd numbered sts.
Is it supposed to be like that?
cuz box stitch is k2, p2 for 2 rounds, then p2,k2 for 2 rounds..
so how can i work the box stitch when there are odd numbers??
maybe i am not decreasing the right way...
can someone please explain all of this to me.
thanks!!
Update: How do i dec 1 st at the beg of each row??
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