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The passive future subjunctive in Byzantine texts

Although Ancient Greek had an expansive and detailed verb paradigm, it has several gaps in the system, for a variety of reasons. Language evolution typically did not seek to fill in these gaps; instead it has ended up jettisoning most of the distinctions made in Ancient Greek. The 3 6 4 matrix of finite verb inflections of Ancient Greek (active–passive–middle; perfect–imperfect–future–aorist–perfect–plurperfect; indicative–subjunctive–optative–imperative), consisting of 38 tense paradigms (52% of all possibilities), has been reduced to a 2 2 2 2 matrix (active–passive; past–non-past; perfective–imperfective; imperative–unmarked), and 11 tense paradigms (69% of all possibilities; if we ignore imperatives, all possible tenses are realised). During the long and little-documented history of post-Classical Greek as a learned language, some writers sensed the gaps in the system, and sought to repair them. For example the conflation of middle and passive perfect was undone by grammarians, with a spurious middle perfect t]tupa distinguished from a passive perfect t]tuva (Herodian, De prosodia catholica p. 438, Theodosius, Canones isagogici de flexione verborum pp. 49, 52, Peq· cqallatij/r pp. 147 ff): in reality the “middle perfect” was the second mediopassive perfect, which had become obsolescent since Homer. Spurious though the distinction was, it became enshrined in Byzantine grammars, and persisted in grammars well into the 19th century. Another such gap that beckoned for correction was the absence of future subjunctive forms in Greek. There is no history of future subjunctives in Classical Greek, and the non-existence of the tense has long been a trap for