In Former English the neuter instrumental range hwȳ is likewise attested in prepositional phrases in related use, particularly in for hwȳ for why adv., and likewise with other prepositions which include things like be by prep. and tō to prep. (Take a look at the Aged Saxon parallels cited previously https://damienalprs.blogcudinti.com/36926346/details-fiction-and-why-petsky-store