(B) (B7) (E) 3.___|_______________|________________________|______________ 4.___|_______________|________________________|_12______12_12 5._7a|_7~7a__10~~~12_|_14a~~17a__~20a__19a~17a|_12____12~~_12 6.___|_______10~~~12b|_14b~~17___~20___19~~17_|_12_12~b~~~_12 7.___|_______________|________________________|______________ 8._7_|_7~~~__10L~~12L|_14~~~17___~20R__19~~17_|______________