Consider a 3 x 3 voq switch that we studied in class. here, there are three input queues at each port, which hold packets bound for the three output ports (a total of nine queues). for example, q13 is the length of the queue (in packets) at input port 1, which are destined for output port 3. suppose that we denote a matching using the notation in which [13 22 31] indi cates that one packet each from the queues q13, q22 and q31 are sent to the output ports 3, 2 and 1 respectively.