| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must have [noun sg] | 228 |
|
| 2 | must have lifespan | 34 |
|
| 3 | must have regard | 25 |
|
| 4 | must have access | 16 |
|
| 5 | must have time | 9 |
|
| 6 | must have priority | 5 |
|
