The ten (10) basic structures and substructures of pattern analysis are:
Chiasm—An A-B-C-X-C'-B'-A' or A-B-C-C'-B'-A' type of arrangement.
Chiasm (imperfect)—An asymmetric chiasm with an absence, extra, or transposition.
Chiasm substructure—A chiastic-shaped sub-unit of an element, may be asymmetric.
Immediate repetition—An A-A'-B-B' or a A-A'-B-B'-C-C' type of arrangement.
Immediate repetition substructure—A sub-unit of an element, shaped like a-a'-b-b'.
List—An A-B-C-D-E or 1-2-3-4-5 type of arrangement.
List substructure—An a-b-c-d-e or 1-2-3-4-5 shaped sub-unit of an element.
Parallel symmetry—A step-like A-B-C-X-A'-B'-C' or A-B-C-A'-B'-C' arrangement.
Parallel symmetry (imperfect)—An asymmetric parallel symmetry with an absence, extra, or transposition
Parallel symmetry substructure—A step-like sub-unit of an element, may be asymmetric.