[yo k1 tbl] = RS: stitch with right needle in the gap between the next 2 stitches and get yarn on right needle (new stitch on right needle, the other 2 stitches are still on the left needle), knit the first one left on the left needle through back loop (= 1 new stitch + 1 k tbl on right needle); WS: k2tog tbl
Shown with a cast-on count of 6 stitches.