 By applying the same process repeatedly, 7, 9, 11... stages are possible.A rearrangeably nonblocking network of this type with "m" = "n" = 2 is generally called a "Beneš network", even though it was discussed and analyzed by others before Václav E. Beneš.The number of inputs and outputs is "N" = "r"×"n" = 2"r".