Protoform: *=iχʷ-/*ʔiχʷVn-(~qʷ)
Meaning: 1 to know 2 to be able 3 to be possible
Avar: =eh- 3
Chadakolob: =eh- 3
Chamalal: eχʷn-2,3,=eχʷ-1
Tindi: eχʷĩ- 2
Comments: Cf. also Cham. beh-id-, Tind. =eh- 'to be possible' - obviously borrowed from Avar and coexisting with genuine reflexes eχʷVn-, eχʷĩ-.
