| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] [adv] be down to | 9 |
|
| 2 | [modal v] [adv] be down to | 9 |
|
| 3 | [adv] be [verb] down to | 21 |
|
| 4 | [adv] be [vb pp] down to | 18 |
|
| 5 | [adv] be put down to | 7 |
|
| 6 | [adv] be put down to | 7 |
|
