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1- Parall P1. The simplest, generated by two translations
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2- Parall P2. A 180 degree rotation
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3- Rect PM. The translation directions are at right angles plus a reflection
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4- Rect PG. A glide reflection at right angles and a translation
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5- Rhombus CM. A reflection and a glide reflection along parallel axis
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6- Rect PMM.Two reflections at right angles.
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7- Rect PMG. A reflection and a glide reflection at right angles. And a 180deg rotation
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8- Rect PGG. Two glide reflection at right angle. Also has two 180deg rotations
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9- Rhombus CMM. CM with an additional reflection at right angle
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10- Square P4. A 90 degree rotation and a 180 degree rotation
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11- Square P4M. P4 with two reflections at 45 degrees to each other
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12- Square P4G. Glide reflection at 45 degrees to translation axis
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13- Hexagon P3. A 120 degree rotation
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14- Hexagon P31M. P3 with two reflection at 60 deg of each other. Center of rotation lie on axis of rotation
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15- Hexagon P3M1. P3 with two reflection at 60 deg of each other.
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16- Hexagon P6. 0 / 60 / 120 / 180 / 240 / 300 rotation
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17- Hexagon P6M. 0 / 60 / 120 / 180 / 240 / 300 with a 30degree reflection
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