bart_left.jpg, bart_straight.jpg, bart_right.jpg, pract_left.jpg, pract_right.jpg, pract_straight.jpg, Bob_left_study.jpg, Bob_frontal_study.jpg, Bob_right_study.jpg, B1_Identical_Left.jpg, B2_Identical_Frontal.jpg, B3_Identical_Right.jpg, Dan_Left_Study.jpg