In Past English the neuter instrumental range hwȳ is Furthermore attested in prepositional phrases in relevant use, specifically in for hwȳ for why adv., and also with other prepositions which incorporate be by prep. and tō to prep. (Take a look at the Aged Saxon parallels cited previously pointed out). https://bookmarkindexing.com/story20001821/getting-my-petsky-unique-value-to-work