lesson one
1-6:BCBDCA 7-12:DBACCC
lesson two
1-6:CDCCAB 7-12:BADCDB
lesson three
1-6:CACADB 7-12:CCBABB
lesson four
1-6:DBABBA 7-12:CBCACC
lesson five
1-6:CADBCD 7-12:ABCBCD
lesson six
1-6:DACDDA 7-12:DABADA
lesson seven
1-6:BCCDAC 7-12:DACBAB
lesson eight
1-6:DBBACC 7-12:BBADBB
lesson nine
1-6:CBDAAB 7-12:BDBBDC
lesson ten
1-6:ADDCBD 7-12:ACACCA
lesson eleven
1-6:BBBABC 7-12:CACCBD
lesson twelve
1-6:CCADDA 7-12:DACDAA
lesson thirteen
1-6:BDBCAB 7-12:BCAAAD
lesson fourteen
1-6:BCACDB 7-12:CBCBBB
lesson fifteen
1-6:DBCBCD 7-12:ADCCCB
lesson sixteen
1-6:AADABA 7-12:DADDDA
lesson seventeen
1-6:DBBDCC 7-12:BAACAD
lesson eighteen
1-6:BDBDBC 7-12:DCACCB
lesson nineteen
1-6:ADCCDB 7-12:CBCACC
lesson twenty
1-6:BCBBCB 7-12:CACCDA
lesson twenty-one
1-6:CDCDAC 7-12:BBADCC
lesson twenty-two
1-6:DBDDBD 7-12:ACDABB
lesson twenty-three
1-6:AAACCA 7-12:DDBBAD
lesson twenty-four
1-6:BAACAA 7-12:CCCBAB