| | Number of Real Solutions |
| Necklaces |
0 |
2 | 4 |
| baadcc |
0 | 0 | 25000 |
| baaccd |
0 | 0 | 25000 |
| baacdc |
0 | 0 | 25000 |
| baccda |
0 | 0 | 25000 |
| bacdca |
0 | 0 | 25000 |
| bdaacc |
0 | 633 | 24367 |
| bcaacd |
0 | 5573 | 19427 |
| badacc |
0 | 5719 | 19281 |
| baccad |
0 | 5820 | 19180 |
| bcdaac |
0 | 6037 | 18963 |
| bcacda |
0 | 12848 | 12152 |
| bacadc |
0 | 12868 | 12132 |
| bcadac |
57 | 5298 | 19645 |
| bacdac |
872 | 6528 | 17600 |
| bacacd |
1547 | 7039 | 16414 |
| bdacac |
5039 | 7868 | 12093 |
| |
Problems fibred over
(X )2X (Y )2Y |
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