Lesson 1:bcbdc adbac cc
Lesson 2:cdcca bbadc db
Lesson 3:cacac bccba bb
Lesson 4:dbabb acbca cc
Lesson 5:cadbc dabcb bd
Lesson 6:dacdd adaba da
Lesson 7:bccda cdacb ab
Lesson 8:dbbac cbbad bb
Lesson 9:cbdaa bbdbb dc
Lesson 10:addcb cacac ca
Lesson 11:bbbab ccacc bd
Lesson 12:ccadd adacd aa
Lesson :13 bdbca bbcaa ad
Lesson 14:bcacd bcbcb bb
Lesson 15:dbcbc dadcc cb
Lesson 16:aadab adadd da
Lesson 17:dbbdc cbaac ad
Lesson18 :Bdbdb cdcac cb
Lesson 19:Adccd bcbca cc
Lesson 20:Bcbbc bcacc da
Lesson 21 :cdcda cbbad cc
Lesson 22:dbddb dacda bb
Lesson 23:aaacc addbb ad
Lesson 24:baaca acccb ab
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
Lesson 49:dabab ccacc aa
Lesson 50:dbacc aadbb cd
Lesson 51:bcddd adcad db
Lesson 52:bccab dcbac bd
Lesson 53:cdacc cdcda cc
Lesson 54:dbdbd badcb dd
Lesson 55:aabda acabd ab
Lesson 56:cacca cabbc cc
Lesson 57:abbbb dcdcb da
Lesson 58:bdaac bdcad bd
Lesson 59:dbddd abada ab
Lesson 60:bacbc babac ad
Lesson 61:bacca dcabb dd
Lesson 62:addcd ccbda db
Lesson 63:dbaab ddacd ca
Lesson 64:ccccb bccab bb
Lesson 65:adbbc aadcc bd
Lesson 66:cbaad aabab ba
Lesson 67:daddd dbbad dd
Lesson 68:bbcdb bbccc aa
Lesson 69:abcbb ddaab cd
Lesson 70:dbccd bcacd dc
Lesson 71:bdbbc cdbbc ba
Lesson 72:acadb accdb ad
Lesson 73:cadac dadaa db
Lesson 74:baccd cacbc ab
Lesson 75:cabdb abbdd cc
Lesson 76:dbdaa bbacb dd
Lesson 77:acabc dddaa ba
Lesson 78:acbbc acbab ca
Lesson 79:bdcca dbada ac
Lesson 80:cbdad cadcc db
Lesson 81:daadb bdcbd bd
Lesson 82:abadc cdaac bd
Lesson 83:bacca bcbcd ab
Lesson 84:ccabd cccda cd
Lesson 85:ddbab abdbb dc
Lesson 86:bcabb bdcab bc
Lesson 87:cdcda ccada ad
Lesson 88:cbbcc abbcc cb
Lesson 89:aadad dadbd db
Lesson 90:bccca bcbad dd
Lesson 91:dbcbc dbbcb cb
Lesson 92:bcdcb abbad ca
Lesson 93:cdbac ccdcb db
Lesson 94:abcba dacda bc
Lesson 95:dabad cdcac dc
Lesson 96:dccba dcdab cb