The fifth and sixth wing, Ta Chuan or 'Great Appendix', the eighth wing, Shuo Kua or 'Discourses on the Trigrams', and the ninth wing, Hsü Kua or 'Treatise on the Sequence', are an exception. You can find these commentaries under Appendices.
Arrangement of the Ten Wings
The first and second wing
T'uan Chuan 1 to 30 and 31 to 64 consist of the 'Commentaries on the Judgement' that accompany the judgements in the text of the seperate hexagrams.
The third and fourth wing
Hsiang Chuan 1 to 30 and 31 to 64 both consist of two sections. The first of these is the 'Image', the second the 'Commentaries on the Lines'. Both sections can be found in the text of the separate hexagrams.
The fifth and sixth wing
These are the sections 1 and 2 of the Ta Chuan. They are a general commentary, although sometimes commentaries on specific hexagrams, even on specific lines, are included. Both sections consist of twelve chapters.
| Section1 | |
| Chapter 1: | The Changes in Creation and in the Book of Change |
| Chapter 2: | On the wording and the use of the Book of Change |
| Chapter 3: | On the words of the signs and lines |
| Chapter 4: | The deeper meaning of the Book of Change |
| Chapter 5: | TAO and its relation to the light and dark force |
| Chapter 6: | Application of TAO on the Book of Change |
| Chapter 7: | The effects of the Book of Change on people |
| Chapter 8: | On the use of the appended explanations |
| Chapter 9: | On the Oracle |
| Chapter 10: | The fourfold use of the Book of Change |
| Chapter 11: | On yarrowstalks, signs and lines |
| Chapter 12: | Summary |
| Section2 | |
| Chapter 1: | On signs and lines, on creating and working |
| Chapter 2: | Cultural history |
| Chapter 3: | On the structure of the hexagrams |
| Chapter 4: | On the nature of the trigrams |
| Chapter 5: | Commentary on some of the lines in the Book of Change |
| Chapter 6: | On the general nature of the Book of Change |
| Chapter 7: | The effect of some hexagrams on building character |
| Chapter 8: | On the use of the Book of Change: The lines |
| Chapter 9: | The lines (continued) |
| Chapter 10: | The lines (continued) |
| Chapter 11: | The value of prudence as doctrine of the Book of Change |
| Chapter 12: | Summary |
The seventh wing
Wen Yen or 'Explanation of the Words and Sentences' is an additional commentary on the first two hexagrams, see: Wen Yen on Ch'ien and Wen Yen on K'un. Like the Ta Chuan it originated around Confucius.
Some experts argue that the Wen Yen commentaries must have once existed for all 64 hexagrams, but failed to escape the fires of the great bookburnings of Chin in 213 BC.
The eighth wing
Shuo Kua or 'Discourses on the Trigrams', contains some pre-confucian material in a very lucid style. Chapter 3 is a notable, if not notorious, exception. A commentary out of the school of Confucius has been included.
A reference is made to two arrangements of the trigrams, the Primal Arrangement, attributed to the mythical sage Fu Hsi, and the Inner World Arrangement, attributed to king Wen of Chou.
The ninth wing
Hsü Kua or 'Treatise on the Sequence', aims at giving an explanation why the hexagrams are given in their present order. Although an occasional rational or intruiging explanation cannot be denied, the effort falls short of its intentions. At best it seems a rather stretched mnemonic on the general theme of things being unable to last forever, and hence being followed by something else.
The tenth wing
Tsa Kua or 'Miscellaneous Signs', characterizes the hexagrams in as far as they approximate, or are opposed to, one another in meaning. They are mostly in rhyme and this, as much as their meaning, may have influenced their grouping.
They can be found in the text of the separate hexagrams, sometimes as a complete poem that also covers (and appears in) the related hexagrams, sometimes in part, with a reference to the hexagrams concerned.