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It is necessary to mark 2 petty and knit the raglan line.
For this, one hatched in a set, knit as usual, and the second - behind the front wall (like the front one on the lips). Before the first loop and after the second loop, it is necessary from the chain of loops, which were tied up with the previous series, along the loop.
You can mark and 4. and 6 loops, if you need a wide "road". But they will need to knit fucking. And it will look like a series of facial loops associated with knitting needles.