If it doesnt have anything below the base sign (or above in the case of base 50 and 1.18) and that the 100 isnt replaced, it either means that the sound is original or that i cant find the origin of the sound. the 100s have multiple sounds that plays at once, so theres gonna be multiple baseblocks playing at once, if the spots have an ? instead of a baseblocks, then it's the same conclusion, either original sounds or origin not found.