| A | B |
|---|
| prediction showing certainty | will (strongest level of certainty) |
| assertion showing capability | can (strong level of certainty) |
| prediction showing probability | should (highly likely) |
| prediction showing possibility | may, might, could (not very certain) |
| requirement or obligation | must (very much needed) |
| strong recommendation/advice | should (somewhat needed) |
| opportunity or option | can |
| suggestion | could |
