Lesson 1 1
Lesson 2 18
Lesson 3 31
Lesson 4 45
Lesson 5 60
Lesson 6 81
Lesson 7 85
Lesson 8 90
Lesson 9 110
Lesson 10 128
Lesson 11 139
Lesson 12 157
Lesson 13 178
Lesson 14 200
Lesson 15 213
Lesson 16 234
Lesson 17 248
Lesson 18 264
Lesson 19 280
Lesson 20 301
Lesson 21 311
Lesson 22 330
Lesson 23 350
Lesson 24 368
Lesson 25 389