Help with a pattern direction

:XX: I have been moving along well on the back of a baby sweater and I have come to a direction that is confusing.

Work 12 rows dec 1 st at each end as before in next and every foll alt row. I understand decreasing , but what do they mean by every following alternate row? knit row? pearl row? Help!

every other row… so if you start decreasing on the Knit side, only decrese on the knit side.