Yes
Since Ryukyuan languages are genetically related to Japanese, questions about Ryukyuan languages can expose or touch upon interesting aspects of historical Japanese. For example, Okinawan's use of nu as a non-honorific nominative particle is related to the nominative use of の in Classical J...
Maybe someone can tell by looking at these SPI drills? http://saisokuspi.com/gengo/nigo_mondai1/ http://saisokuspi.com/gengo/g_mondai1/ http://saisokuspi.com/gengo/gokunoyouhou/mondai1/
@LucasTizma: Regarding your recent question. I don't actually have specific numbers, so I won't enter this as an answer... but it partly depends on the era in which the word was imported.
When Japan was opening up to the rest of the world, late 1800s... the dominant medical and scientific languages were German and French.
@LucasTizma これじゃ would be an abbreviated これでは... so it could be used that way