With classical WRR, in the first cycle, the scheduler first selects formula_16 and transmits the five packets at head of queue,A,B,C,D,E (since formula_17), then it selects the second queue, formula_18, and transmits the two packets at head of queue, U,V (since formula_19), and last it selects the third queue, which has a weight equals to 3 but only two packets, so it transmits X,Y. Immediately after the end of transmission of Y, the second cycle starts, and F,G from formula_16 are transmitted, followed by W from formula_18.