| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] [verb] [been] a [adj] | 896 |
|
| 2 | [noun] [verb] a [adj] source | 59 |
|
| 3 | [verb] [been] a [adj] source | 25 |
|
| 4 | [noun] [verb] [been] a source | 14 |
|
