| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [been] some [noun] | 444 |
|
| 2 | [been] some [noun sg] | 356 |
|
| 3 | [be] some improvement | 18 |
|
| 4 | [been] [adj] improvement | 16 |
|
| 5 | [been] some improvement | 13 |
|
| 6 | [been] [det] improvement | 13 |
|
| 7 | [been] some improvement | 8 |
|
