It's pretty obvious from the letters which are superscripted/skipped First they knew Russia, Moscow by the postcode, so they superscripted РОССИЯ МОСКВА, and t

It's pretty obvious from the letters which are superscripted/skipped First they knew Russia, Moscow by the postcode, so they superscripted РОССИЯ МОСКВА, and then they knew which garbled letters correspond to these ones After which they were able to decipher ПР Р.А.СКО.О after which the address becomes obvious (with the help of index) that it is Проспект Вернадского, 37. I don't think they used any tables other that this implicit table. Which is student dormitory of Moscow State University btw, I looked it up.