class 1; ch. 17		17.2.P.001, 17.2.P.002, 17.2.P.007, 17.2.P.008
class 2; ch. 17		17.3.P.012, 17.3.P.014, 17.3.P.018, 17.4.P.034, 17.4.P.036
class 3; ch. 17		17.5.P.043, 17.5.P.047, 17.5.P.038, 17.6.P.061
class 4; ch. 18		18.3.P.010, 18.3.P.016, 18.3.WA.023.Tutorial, 18.3.WA.024
class 5; ch. 18		18.4.P.028, 18.7.P.041, 18.7.P.049
class 6; ch. 19		19.1.P.002, 19.2.P.018, 19.3.P.025, 19.3.P.032
class 7; ch. 19		19.5.P.046, 19.5.WA.045, 19.6.P.057, 19.6.P.059
class 8; ch. 19+20	19.7.P.063, 19.7.P.066, 20.1.P.012, 20.1.P.003
class 9; ch. 20		20.2.P.023, 20.2.WA.011, 20.3.WA.021, 20.3.WA.016, 20.3.P.029
class 10; ch. 20	20.4.P.040, 20.4.P.044, 20.4.P.049, 20.5.WA.052, 20.5.WA.051
class 11; ch. 21	21.1.P.002, 21.1.P.003, 21.1.P.004, 21.1.WA.012, 21.1.WA.008.Tutorial
class 12; ch. 21	21.3.P.031, 21.3.P.032, 21.3.P.035, 21.3.P.036, 21.3.P.039, 21.3.P.040

class 15; ch. 22 	22.4.P.002, 22.4.P.004, 22.4.P.005, 22.4.P.007, 22.5.P.012
class 16; ch. 22	22.7.P.031, 22.8.P.043, 22.10.P.051, 22.11.P.058, 22.11.P.059
class 17; ch. 23	23.2.P.003, 23.2.P.004, 23.2.P.008, 23.3.P.019, 23.4.P.027
class 18; ch. 23	23.5.P.028, 23.7.P.047, 23.9.P.055, 23.9.P.057
class 19; ch. 23	23.10.P.071, 23.10.P.07, 23.10.WA.038, 23.11.P.083, 23.11.P.084
class 20; ch. 23	23.11.P.089, 23.12.P.102, 23.12.P.100
class 21; ch. 24	24.3.P.007, 24.3.P.025, 24.4.P.030, 24.4.P.032
class 22; ch. 25	25.1.P.001, 25.3.P.010, 25.3.P.015, 25.4.P.026
class 23; ch. 25	25.6.P.036, 25.6.P.042, 25.6.P.045, 25.6.WA.039.Tutorial, 25.6.WA.041
class 24; ch. 25	25.7.P.054, 25.7.P.056, 25.7.P.057, 5.7.P.058
class 25; ch. 26	26.2.WA.014.Tutorial, 26.2.WA.026, 26.2.P.006, 26.2.P.011
class 26; ch. 26	26.4.P.027, 26.4.P.028, 26.5.P.033, 26.5.WA.041, 26.5.WA.04