| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] be [verb] [prep] a third | 23 |
|
| 2 | [modal v] be [verb] [prep] a third | 23 |
|
| 3 | [vb mod] be [verb] [prep] a third | 23 |
|
| 4 | [modal v] be [vb pp] [prep] a third | 22 |
|
| 5 | [modal v] be [verb] by a third | 9 |
|
| 6 | may be [verb] [prep] a third | 6 |
|
| 7 | may be [verb] [prep] a third | 6 |
|
| 8 | [modal v] be [verb] to a third | 5 |
|
