Both l and r are partially unvoiced before p, t, k, ty, q, s.
After voiceless stops, in q (= kw), tw, ty, py they {y, w} are partly unvoiced (but not spirantal).
{ty} is followed by an appreciable partly unvoiced y-offglide.
q (kw) consists of a lip-rounded k̊ followed by a partly unvoiced w-offglide