In the subordinate clause the subject, if different from the subject of main clause, sometimes has to take accusative or genitive case. There is marginal occurrence of subjects taking ablative case as well. Subjects of attributive clauses in which the head has a function (as is the case for all English relative clauses) usually require that if the subject is not the head, then it take the genitive, e.g. "tüünij idsen hool" that.one- eat- meal 'the meal that s/he had eaten'.