llocl. Jiinee the 3-counter machine cannot ease a count below 0, it is an error, and the simulating 2-counter ma- e halts without accepting, if m is not evenly divisible by the constant by which we are dividing. 8.5.5 Exercises for Section 8.5 Exercise 8.5.1: Informally but clearly describe counter machines that accept the following languages. In each case, use as few counters as possible, but not more than two counters. i=jor 2 = k or j = k)