Row structures - folded structures with a basic unit having one or two planes of mirror symmetry or no symmetry at all; axial symmetry (vertical axis-wise) has a degree of maximum two. Basic units in row structures are located in rows along parallel lines.
Polar structures - folded structures with a basic unit having geometrical center (a pole) and stars that are formed around the pole; degree of axial symmetry is no less than three.
Four and six radial folded structures
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| M-A-O-U4-VAR1 | M-A-O-U4-VAR2 | M-A-D-U6-VAR1 |
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| M-A-D-U6-VAR2 | М-A-D-U6-VAR3 | M-A-T-U6 |
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| P-A-O-U4 | P-A-T-U6 | P-A-T-U6 |
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| P-R-O-U6 | P-R-O-U4*2 | P-R-O-U4*4 |
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Row polar structures
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