pattern help

hi there, does anyone understand the highlighted portion of this pattern it’s for the boyfriend sweater by leknit. I’ve just started on the sleeves and have so far done the four stocking knit rows and started the fifth row with the 1 knit stitch and the knit two together, I am stuck understanding the next instruction though.

thanks all in advance !

You’re working the sleeve in the round with a beginning of round marker at the underarm. Slip the marker, k1, k2tog (which you’ve done) then knit around until there are 2sts remaining, ssk. The ssk is a left leaning decrease which will complement the right leaning decrease formed by the k2tog.

Possibly the pattern omitted the number of sts as in “…work until 2 sts left, SSK.”