| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] have been [adv] [adj] for | 79 |
|
| 2 | must have been [adv] [adj] [prep] | 76 |
|
| 3 | must have been [adv] [adj] [prep] | 76 |
|
| 4 | must have been [adv] [adj] for | 24 |
|
| 5 | must have [be] [adv] [adj] for | 22 |
|
| 6 | must [vb infin] been [adv] [adj] for | 22 |
|
| 7 | must have been [adv] [adj] for | 22 |
|
| 8 | must have [been] [adv] [adj] for | 22 |
|
| 9 | must [verb] been [adv] [adj] for | 22 |
|
| 10 | must have be [adv] [adj] for | 22 |
|
| 11 | must have been [adv] [adj] for | 22 |
|
