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Is There a Passage Missing at the Beginning of the Igor Tale?

Throughout the nineteenth and twentieth centuries, the verb biashet" in this passage has been interpreted as a subjunctive. That is, the opening lines are taken to mean: "Would it not be fitting, brothers, to begin with olden words ... .S2By the late twelfth century, when the Igor Tale was composed, the -1 participle sometimes alternated with the imperfect in past indicative function. Moreover, the imperfect denotes an unreal state or action, like verbs in the subjunctive mood. Therefore, it is a plausible hypothesis that the imperfect could function as a subjunctive and that biashet" in the opening lines of the Igor Tale is an example of this uncommon usage. The weakness of this hypothesis is that no other "imperfect subjunctives" have yet been pointed out in original Old Russian texts.3 Even if one assumes