1. Functional identity of cs̄, ces, cesc, and cair; 2. Origin of cair and ces; 3. ce(a)sc; 4. ní insae, ní ansae, ní hannsa; n’insae; 5. Translation, lento style, stylistic variation; 6. ce(a)st, ceist; 7. Conclusions. Incl. index of texts referred to.