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Lesson 1 1
Lesson 2 24
Lesson 3 49
Lesson 4 75
Lesson 5 100
Lesson 6 123
Lesson 7 144
Lesson 8 168
Lesson 9 197
Lesson 10 221
Lesson 11 245
Lesson 12 273
Lesson 13 295
Lesson 14 320
Lesson 15 346