Reconstructions

PS
*kVly-at- - kidney (SED I No. 156; Kogan 2011: 219)
PS
*kVm- - articulation, joint, wrist (SED I No. 143; Kogan 2011: 215)
*-­u-­ may be a secondary development due to the influence of *m-­. As a nominal anatomic term based on Akk. and M. Eth. only.
PS
*-kVmV/-kVnV - your; you (genitive and accusative pronominal suffix, 2 pl.) (Kogan 2009:69)
Just as the singular forms, the plural of the pronominal suffix of the 2nd person is based on the element k- with the extension -m- or -n- combined with more or less expressed vocalic oppositions (Kogan 2009:69). The character of consonantal and vocalic oppositions in individual languages generally corresponds to the nominative forms.
PS
*kamˀ-at- - a kind of mushroom (Kogan 2011: 202)
PS
*kVm(V)d- - forearm, cubit (SED I No. 144)
A phonetic diversity throughout Sem. can be explained by (1) lower compatibility of a voiced and voiceless stop in Hbr. and Arm., and (2) change of *­m­ > ­n­ in contact with ­-d (for a similar phonetic evolution cf. *p/ban/md(­at)­ ‘back, podex’, No. 216).
PS
*kmr - to heap up, to accumulate (Kogan–Krebernik 2021a:394)

From among the exclusive Akkadian-‘South Semitic’ isoglosses. 

PS
*kVnVm- - louse (SED II No. 116; Kogan 2011: 212–213)
PS
*kanap- - wing (SED I No. 145; Kogan 2011: 225)
PS
*kunāṯ- - spelt, emmer (Kogan 2015: 296)
PS
*kp - to bend; to encircle (Kogan 2015: 443)
likely related is PWS *kb - to be curved