| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [been] some [noun] | 444 |
|
| 2 | [been] some [noun sg] | 356 |
|
| 3 | [be] some difficulty | 23 |
|
| 4 | [been] [adj] difficulty | 11 |
|
| 5 | [been] [det] difficulty | 8 |
|
| 6 | [been] some difficulty | 5 |
|
| 7 | [been] some difficulty | 5 |
|
