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Lesson 1 1
Lesson 2 18
Lesson 3 33
Lesson 4 49
Lesson 5 65
Lesson 6 82
Lesson 7 100
Lesson 8 121
Lesson 9 136
Lesson 10 153
Lesson 11 171
Lesson 12 185
Lesson 13 207
Lesson 14 226
Lesson 15 243
Lesson 16 260