55091100 -- Single yarn
20086011 ---- Of an actual alcoholic strength by mass not exceeding 11,85?%?mas
50030000 Silk waste (including cocoons unsuitable for reeling, yarn waste and garnetted stock)
72139149 ---- Containing by weight more than 0,06?% but less than 0,25?% of carbon
82071910 --- With working part of diamond or agglomerated diamond