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| (a). C 4 / a m b with origin at 422. |
| (b). C 4 / a m b with origin at 2/m and 422 at 1/4,0,0. |
| (c). C 4 / a m b with origin at 2/m and -4m2 at 1/4,0,0. |
| (d). C 4 / a m b with origin at -4m2. |