Proto-Berber *ăβd~zəg pf. *əβd~zắg impf. *əβădd~zzăg 'to get wet'

• Western/Kabyle
  • Tashl. bzg, bdg impf. azzg
  • CMB bzəg, bzəy
  • Kb. ḇzəḡ impf. ttāzəḡ
• Zenatic
  • Fig. bzəy
  • Rif. bzəg
  • Mzab bzəǧ
  • Ouar. bzəg
  • [Siwa səbzig]
  • [Foq. səbdig]
• Touareg
  • Ah əbdəǵ
  • WY əbdəg
  • Ghat əbǧəǧ
•  Libyan
  • Ghd. ăβǧəǧ
•  Southern
  • Zng. ăwḏəg pf. ūḏäg impf. āddäg

Notes:

There is variation between whehter the root has z as its second root consonant or d. Ghadames even has g as its second root consonant, but this is likely the result of an assimilation of d. Generalizing it is mostly Zenatic varieties and languages somewhat in contact with them that show the form with z. There is no known regular sound law that can account for a shift from d to z, but it seems likely that *ăβdəg is the original and *ăβzəg the result of some kind of dissimilation

References:

Kossmann (1999: 115 {251}, 162 {428})

Taine-Cheikh (2008: 531, n. 956)

NZ: BDG/Ǧ. NG/Ǧ13, BZG/Ǧ(1)