| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb base] [been] [noun] [prep] | 441 |
|
| 2 | [vb base] [been] [noun pl] [prep] | 371 |
|
| 3 | [verb] [been] problems [prep] | 20 |
|
| 4 | [vb base] [been] problem [prep] | 15 |
|
| 5 | [vb base] [be] problems [prep] | 15 |
|
| 6 | [vb base] [been] problems [prep] | 15 |
|
