How Many More Years Midnight", described by Phillips as "the most different record I ever heard", was probably recorded at a different session. Phillips had not yet set up Sun Records and regularly leased his recordings to the Chess label in Chicago. The record was issued as Chess 1479 on 15 September 1951, with "Moanin' at Midnight" as the A-side and "How Many More Years" as the B-side. "Moanin' at Midnight" entered the R&B chart on 10 November 1951, and was followed four weeks later by "How Many More Years", which became the more popular side and rose to no.4 on the chart. The
Shannon capacity of a graph eight neighbors, the eight strings that it can be confused with. A subset of length-two strings forms a code with no possible confusion if and only if it corresponds to an independent set of this graph. The set of code words {"11", "23", "35", "54", "42"} forms one of these independent sets, of maximum size. If "G" is a graph representing the signals and confusable pairs of a channel, then the graph representing the length-two codewords and their confusable pairs is "G" ⊠ "G", where the symbol "⊠" represents the strong product of graphs. This is a graph that has