This is YKVK (26) with Techeiles, but Yidy Fuxman of Knot the Tzitzit believes that some Teimanim will end off, not with a double knot, but with a Teimani Chulya of 2 white winds forming a distinct knot.
An open questin is, why doesn’t the tying begin with a white wind which the Gemara is explicit about.
