Lesson 25: cbbab cdbaa da
Lesson 26: adcbc ddabd bd
Lesson 27: dcddd baddc cc
Lesson 28: cdbbc dbdcd ba
Lesson 29: bccbd babbb cb
Lesson 30: aadab cccda dd
Lesson 31: dbaca adabc ac
Lesson 32: cccbb cadad bc
Lesson 33: dbdac bbccc ac
Lesson 34: dabca dcbcb ca
Lesson 35: adadd adaba dd
Lesson 36: addcd ccbad cc
Lesson 37: cbbbb dacdb ba
Lesson 38: bcaac bddba dd
Lesson 39: dacdd abacc ab
Lesson 40: ccbca acbbb bd
Lesson 41: aacdc bbada cb
Lesson 42: dddbb cddac da
Lesson 43: bbaad daccd ac
Lesson 44: cbccc bdaba bd
Lesson 45: bdabb dcbcb db
Lesson 46: acdda cbcad ca
Lesson 47: dabad aaddc ac
Lesson 48: cbcba cbbda bc
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