An employer has 22 employees (Say A to V). They are to be rotated in 3 shifts namely 1st shift , 2nd shift and 3rd shift. A shift has to be prepared for them such that each employee gets a 3rd shift once every 3 weeks. There should not be more than 8 people at any shift. What should the shift pattern look like for the 22 employees for a period of 12 weeks. Tabulate the shift pattern.