Reconstructions

PS
*ḏarˀ-, *ḏarˁ, *zarˁ- - seed (CDG 642; Fronzaroli 1969: 9–10, 26, 33; Kogan 2011: 200)
PS
*ˀab- - father (DRS 1; Kogan 2014: 88)
PS
*ˀabbVk- - kind of bird (SED II No. 1)

Scarcely attested, not fully reliable because of the semantic difference.

PS
*ˀVbbVl- - kind of bird (SED II No. 3)
PS
*ˀabn- - stone (Fronzaroli 1968: 271, 287, 298; Kogan 2011: 190; Kogan 2015: 42)
PS
*ˀbr - to be strong, vigorous (Kogan 2015: 276)
PS
*ˀa/ibr- - pinion, wing (SED I No. 1)
PS
*ˀi(-)bVr-at- - bone of leg/arm; limb (SED I No. 3)
PS
*ˀdm - red (Bulakh 2005a:258; Kogan 2015: 277)

Level? Quite marginal except for Ugr and Hbr.

PS
*ˀuḏn- - ear (SED I No. 4)