I need the algebraic model for this one :) thanks!

Problem #3: Assignment Problem The coach of a swim team needs to assign swimmers to a 200-yard medley relay team (four swimmers, each swims 50 yards of one of the four strokes). Since most of the best swimmers are very fast in more than one stroke, it is not clear which swimmer should be assigned to each of the four strokes. The five fastest swimmers and their best times (in seconds) they have achieved in each of the strokes (for 50 yards) are Carl Chris David Tony Ken Backstroke 37.7 32.9 33.8 37.0 34.4 Breaststroke 43.4 33.1 42.2 34.7 41.8 Butterfly 33.3 28.5 38.9 30.4 32.8 Freestyle 29.2 26.4 29.6 28.5 31.1 How should the swimmers be assigned to make the fastest relay team