A C C FigFig. . 3. 3.1 1 The Superficial Back Line. B FigFig. . 4. 4.1 1 The Superficial Front Line. B C A FigFig. . 5. 5.1 1 The Lateral Line. A A FigFig. . 6. 6.1 1 The Spiral Line. c B FigFig. . 7. 7.1 1 The Arm Lines. A B FigFig. . 8. 8.1 1 The Back and Front Functional Lines. FigFig. . 9. 9.1 1 The Deep Front Line. 。