| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] must be [vb pp] [be] | 22 |
|
| 2 | [pron] must [be] [vb pp] be | 22 |
|
| 3 | [Wh det] must [be] [vb pp] [be] | 19 |
|
| 4 | [pron] must [be] [vb pp] [is] | 15 |
|
| 5 | [pron] must [be] [vb pp] is | 15 |
|
| 6 | which must [be] [vb pp] [be] | 12 |
|
| 7 | which must [be] [vb pp] [be] | 12 |
|
| 8 | what must [be] [vb pp] [be] | 7 |
|
| 9 | what must [be] [vb pp] [be] | 7 |
|
| 10 | [pron] must [be] [vb pp] [am/are] | 5 |
|
| 11 | [pron] must [be] [vb pp] are | 5 |
|
