Note 112 — III. MORPHOLOGY.
Reading edition
For ai estat we sometimes find soi agutz. The confusion arises perhaps from the use of both es and a in the sense of ‘there is’: hence es estat = a agut; and by a mixture of the two, es agut. Cf. L. Gauchat, Sone avuto, in Scritti vari di filologia (dedicated to E. Monaci), 1901, p. 61.