The DoBeS project takes Traill's cluster analysis to mean that only the twenty tenuis, voiced, nasal, and voiceless nasal clicks are basic, with the rest being clusters of the tenuis and voiced clicks with and either or . Work on Taa's sister language Nǁng suggests that all clicks in both languages have a uvular or rear articulation, and that the clicks considered to be uvular here are actually lingual–pulmonic and lingual–glottalic airstream contours. It may be that the 'prevoiced' consonants of Taa, including prevoiced clicks, can also be analyzed as contour consonants, in this case with voicing contours.