| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [is] [vb pp] by [noun] | 4544 |
|
| 2 | [be] [vb pp] by reference | 240 |
|
| 3 | [is] [vb pp] [prep] reference | 69 |
|
| 4 | [is] [vb pp] [prep] reference | 69 |
|
| 5 | [is] [vb pp] by reference | 49 |
|
| 6 | [is] [verb] by reference | 49 |
|
