Bc ＞ (✱pc), ptš (before a): ✱reprŏb(ĭ)cat ＞ reprǫpcha.
Brg ＞ rg or urg in fabrĭca ✱fabrĭga ＞ farga faurga. Cf. § [70], Br.
Bs ＞ bs in the learned words absens, absensa.
Bsc ＞ sc: obscūrus ＞ escürs.
Bst ＞ st: sŭbstat ＞ sọsta.
Bt ＞ bt, t: subtīlem ＞ sobtil sotil. See also βt below.
Bts ＞ ts: sŭbtus ＞ sọtz.
βc ＞ uc: ✱avĭca ✱aβca ＞ auca.
βc´ ＞ udz or uts, later uz, us: avicĕllum ✱aβcĕllu ＞ auzęl aucęl. Cf. § [65], C´, 1.