Apply network simplex Algorithm 10C to compute an optimal flow in each of the following networks. Start from the flow given in the figure, using the basis specified below.

(a) The network of Exercise 10-13 with basis 511, 22, 12, 42, 13, 426

(b) The network of Exercise 10-14 with basis 511, 22, 12, 32, 14, 326

(c) The network of Exercise 10-25 with basis 511, 22, 11, 32, 12, 426

(d) The network of Exercise 10-26 with basis 511, 22, 13, 12, 13, 426