It appears that in Ilkorin, double spirants reduced to single spirants. The clearest example of this is ᴹ✶b’rittē > [briθθe >] Ilk. brith [briθ] (Ety/BIRÍT). Another possible example is ᴹ√TAK > [takka > taxxa >] Ilk. tâch [tāx] (Ety/TAK) as suggested by Helge Fauskanger (AL-Ilkorin/tâch). In the case of primitive [kt] or [ktʰ], it seems the development was to [xθ] and then [θ], for example: ᴹ✶oktā > [oxθa >] Ilk. oth (Ety/OKTĀ). There are no examples of the development for other spirant pairs, but perhaps the preceding spirant assimilated to the following one as a general rule. If so, the assimilation could also have occurred earlier, when the sounds were still stops (as suggested by Helge Fausganger, AL-Ilkorin/oth).