M.1 is the chart, and the key for the chart is
=P from RS, K from WS
=1 YO + slip 1 st as if to K
=From WS: Work P tog YO and the slipped st
So Row One and all odd rows (RS) would be read from right to left, and all even rows are read left to right (WS)
Row one - yo + slip as if to knit; p; all across the row.
Row two - knit; purl YO and slipped stitch together all across the row