Second edition:
CDCACADBAA
The fourth edition:
BAACDBCACD
The sixth edition:
BCCDCABCBC
The eighth edition:
ABADADADDB
Tenth edition:
DABDCDDD
Twelfth edition:
DDBBCCDA
Fourteenth edition:
CACCBBB
Sixteenth edition:
(None)
Seventeenth edition:
AADCBBCABBC
Eighteenth edition:
ACBDBABBA
The nineteenth edition:
DDABACBC
Twentieth edition:
DACBCBDC
Version 2 1:
DCDBACCC
Twenty-second edition:
ADDCBCBA
Note: each version of the multiple-choice question above is not just a question, but a whole half of all multiple-choice questions. Anyway, as long as it is a multiple-choice question, it is included. The order is from left to right and from top to bottom.