Reconstructions

PS
*bVkVr- - firstborn (Kogan 2014: 91)
PS
*baḳḳ- - gnat (SED II No. 58; Kogan 2011: 212)
PS
*bḳl - to sprout, to germinate (EDA B 68)
PS
*bVḳl- - a cultivated plant, seed, grain, cereal (Fronzaroli 1969b: 5, 24, 32; Kogan 2012: 245)
PS
*bVḳl- - shoot, plant, vegetable (EDA B 68)
PS
*bik(ʷ)ay-, *bukay- - kind of insect or worm (SED II No. 57)
PS
*bVl(Vy) - without (Kogan 2015: 184)

The PCS negative particle *bal is likely related to this preposition (Arakelova 2001:25, Kogan 2015:184). There is also a possibility that *bVl(Vy) 'without' is ultimately connected to the PS root *bly 'to be worn out' (GAG § 114 r, Tropper 2000:771, Kogan 2015:184), although this is not generally accepted (Arakelova 2001:25, Pat-El 2013).

PS
*bll - to mix (EDA B 38)
PS
*blṭ - to live, to escape (Kogan 2015: 85)

The root plṭ, attested with the meaning “to escape” in Ugaritic, Hebrew and Aramaic, must be related in spite of the phonological irregularity. More problematic is Arb. flt ‘to escape’, usually compared as well (Fronzaroli 1965b:250, 263, 267 and elsewhere)
(Kogan 2015: 85)

PS
*bly - to be old, worn out (CDG 98; Kogan 2015: 184)

Connection with ESA blyt 'to be buried suggested by W. Müller (1962: 29, 1963: 307) is doubtful (CDG 98)