indeed uniquely decodable then it's the case that this property holds true what is this saying it's saying for each symbol and corresponding ain't coding so the word the bit word over you we can look at the length of the encoding and there's some property satisfied by these lengths so funny and somebody's your table symbols and bitstreams it's gonna be a and some bits string here then be some other bits here and so forth you give you a code that's uniquely decodable then the lengths that you encounter here will satisfy this