A farmer named Hendrick and his wife Katrun are trying to catch a couple of hogs. The two people and the two hogs start as shown in the diagram. The participants in this little sport move by stepping one square up, down, right, or left (not diagonally). Hendrick and Katrun move first (at the same time) in whichever directions they choose. Then the hogs move. The hogs always try to escape; the people always try to catch the hogs. No one can ever step outside the 5x8 field. How can the farmers catch the hogs?