section,completed 2.1.1,YES 2.1.2,YES 2.1.3,YES 2.2.1,YES 2.2.2,YES 2.2.3,YES 2.3.1,YES 2.3.2,YES 2.3.3,YES 2.4.1,YES 2.4.2,YES 2.4.3,YES 2.5.1,NO 2.5.2,YES 2.5.3,NO 2.5.4,NO