positional variant (does not occur in isolation)
Based on Maciołek & Tambor (2012)
Voiceless: the vocal folds are separated, not vibrating, the air flows freely between them.
Non-palatalized: the middle of the tongue is in a neutral position, it does not take part in the articulation.
Labio-velar: the lips move forward and are rounded, at the same time, the back of the tongue gets close to the soft palate.
Approximant: the articulators get closer than with vowels but less than with fricatives. The soft palate lies against the back wall of the pharynx.