A very difficult case. PAT *χ́- can not in any way correspond to PAK *w-, and Ub. ǵ- to either, so we must assume that in all subgroups we have compounds with different initial components (but the nature of these components is not clear). The situation is aggravated by irregularity of correspondence between PAT *-t- , PAK *-t:- and Ub. -ṭ- and by the existence in Abaz. of a synonymous adjective ħat-la 'heavy' (does it have any connection with *χ́anǝta ?).