 Complete the following phrase:  From 1940 to 1946, the Bears displayed their domice in the game, playing in five NFL championship games, winning four, and posted a 54173 regular-season record. In 1942, the Bears posted a perfect 110 record and outscored their opponents, 37684, however, they lost the championship game to the Redskins. Although the T-formation had been used many years before Luckman joined the Chicago Bears, he was central to Chicagos successful use of this style of play because of his game-sense and versatility. Perfecting Halas complex offensive scheme of fakes, men in motion, and quick-hitting runs, Luckman added the dimension of accurate downfield throwing. He was instrumental in his teams record-setting 730 win over the Washington Redskins in the 