| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | there must be [prep] least | 27 |
|
| 2 | must [verb] be [prep] least | 23 |
|
| 3 | there [verb] be [prep] least | 17 |
|
| 4 | there must [verb] be [prep] | 14 |
|
