1.________|_________________|_________________| 2.________|_________________|_________________| 3.________|_12~~~17__15~~~12|_10~~12b_12____10|_7b 4._12__14_|_________________|_________________| 5._12a_14a|_12~~~17a_15a~~12|_10~~12a_12____10|_7a 6.________|_________________|____________12___| 7.________|_________________|_________________|