What does ㅅㅁ translate into

shiut, mium. Respectively. As stated before they are just letters and do not compose whole words. Even with the existence of a bar either vertical to shiut which would make it shi or horizontal which I have no idea how that would grammatically exist without an eeyung... if it does exist with an eeyung it should be oot. Or something like that. :x It would still be grammatically incorrect. So they probably exist by themselves as simple markers or something is missing from the original translation.