Work even means to work in your pattern stitch. Usually it also means without any increases or decreases to your stitch count, but the pattern row has both, though they balance each other so your stitch count will stay the same anyway.
It looks like garter stitch for the first few rows, then switches to stockinette. So knit the WS rows except for the inc sts that you yo, k yo, on the RS which will be purled. Then you may be doing some rows in stockinette, then go back to the garter stitch pattern.
sue- knitting heretic
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