上代 じょうだい特殊 とくしゅ仮名遣 かなずかいであれば
jōdaitokushukana zukaideareba

Noun
Da Copula

The "-eba" conditional form ("if/when…") of 上代特殊仮名遣い

1. If it were Old Japanese orthography; If Old Japanese orthography were the case

Ba Conditional
Linguistics