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E38 | The Robin Hood Problem; The Owl and the Pussycat Problem
E22 | The Big Dog Problem; The Three Friends Problem
E21 | The George Washington Problem; The High Noon Problem
E16 | Yet Another Tree Problem; The Romeo and Juliet Problem
E15 | The Mega Mall Problem; The Cleopatra Problem
E14 | The Blockette Problem; The Tulip Problem
E11 | The Slop Problem; The Birthday Present Problem
E7 | The Parade Problem; The Halloween Problem
E5 | The Tree Problem; Another Tree Problem