| | | | | | | | | | ① | | ② | ③ | | | | ④ ＝ . | | | | ① | | | | | | | | | ② | | | | | | | | ③ | | | | | | | 3.5 4.5 18 26 | ④ | | | | | | 2.5 3.5 | 12 15 | | | | | | | | | | | | | |