| F | ↛ | Calculators removed |
| D | ↛ | Calculators::classB() removed | |
| C | ↛ | Calculators::classF() removed | |
| C | ↛ | Calculators::classE() removed | |
| C | ↛ | Calculators::classH() removed | |
| B | ↛ | Calculators::classC() removed | |
| A | ↛ | Calculators::classD() removed | |
| A | ↛ | Calculators::classI() removed | |
| A | ↛ | Calculators::classA() removed | |
| A | ↛ | Calculators::classG() removed |