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Lesson 1 1
Lesson 2 5
Lesson 3 14
Lesson 4 22
Lesson 5 31
Lesson 6 32
Lesson 7 43
Lesson 8 56
Lesson 9 66
Lesson 10 68
Lesson 11 77
Lesson 12 88
Lesson 13 98
Lesson 14 108
Lesson 15 110
Lesson 16 118
Lesson 17 126