| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [vb pp] [prep] a [adj] | 24780 |
|
| 2 | be [vb pp] [prep] a [num ord] | 335 |
|
| 3 | be [vb pp] [prep] [art] fourth | 70 |
|
| 4 | be [verb] [prep] a fourth | 22 |
|
| 5 | be [vb pp] [prep] a fourth | 19 |
|
| 6 | be [vb pp] [prep] a fourth | 19 |
|
| 7 | [be] [vb pp] [prep] a fourth | 19 |
|
