| Tier | Texts |
|---|---|
| imposible | LV 48 |
| pain in the ass | LV9, LV26, LV32, LV35 |
| hard | LV3, LV38, LV49 |
| mediul | LV16, LV22, LV28, LV34, LV40, LV41 |
| easy | lv7, LV10, LV11, LV14, LV18, LV33, LV36, LV43, LV45, LV46 |
| free | LV1, LV2, LV4, LV5, LV6, LV8, LV12, LV13, LV19, LV20, LV21, LV24, LV25, LV15, LV17, LV23, LV27, LV29, LV30, LV31, LV37, LV39, LV42, LV44, LV47 |
