/(r)iuˇ (r)ianˊ/, /-{-{yóuyān}-}-/, /(j)i̯u¹¹ (j)i̯an²⁴/, /i̯u²³⁻³³ i̯ɛn⁴⁴/, /i̯u²⁴⁻²² i̯ɛn³³/, /i̯u²⁴⁻²² i̯ɛn⁴⁴/, /i̯u²⁴⁻²¹ i̯ɛn⁴⁴/, /i̯u²⁴⁻¹¹ i̯ɛn⁴⁴/, /i̯u¹³⁻²² i̯ɛn⁴⁴/, /i̯u¹¹ i̯en²⁴/, /jɐu̯²¹ jiːn⁵⁵/, /iuˇ ienˊ/, /jau4 jin1/, /jau4 jin1/, /yeo4 yin1/, /youian/, /yóuyan/、/ㄧㄡˊ ㄧㄢ/
油類未燃燒完全，所產生的黑色物質

1. sadza
2. kopeć