14 1 A B C D 2 A B C D 3 A B C D 4 A B C D 5mnl All Bmnn Cmn Dl 6.x45x9 Ak6 Bk5 Ck4 Dk5 7 A B C D 8C xy4:12FlCABA3AB|A29 B3 C27 D4 9SABCSAABCBC7SAAC2AB1 A7 B11 C328 D340 34 1712.(1)(2).1812OO.1912.;.6(:):()1 2 3 4 5 6().(1)?()(2)18(3)6:44 :20124C.1 2.2112(1)(2):2223 2210.1 2.2310 1 2