list(alpha = c(NA, 0, 0, 0, 0),
   beta = structure(.Data = c(NA, NA, NA, NA, NA,
                        NA, 0, 0, 0, 0,
                        NA, 0, 0, 0, 0,
                        NA, 0, 0, 0, 0), .Dim = c(4, 5)),
      gamma = structure(.Data = c(NA, NA, NA, NA, NA,
                              NA, 0, 0, 0, 0), .Dim = c(2, 5)),
      lambda = structure(.Data = c(0, 0, 0, 0,
                           0, 0, 0, 0), .Dim = c(4, 2)))