+-----+-----+---+---------------------+---------------------+
| a   | b   | i | x                   | y                   |
+-----+-----+---+---------------------+---------------------+
| pan | pan | 1 | 0.3467901443380824  | 0.7268028627434533  |
| eks | pan | 2 | 0.7586799647899636  | 0.5221511083334797  |
| wye | wye | 3 | 0.20460330576630303 | 0.33831852551664776 |
| eks | wye | 4 | 0.38139939387114097 | 0.13418874328430463 |
+-----+-----+---+---------------------+---------------------+
