| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | has [been] a considerable [noun sg] | 30 |
|
| 2 | has been a considerable [noun] | 30 |
|
| 3 | has [been] a considerable amount | 10 |
|
| 4 | has [been] a considerable amount | 10 |
|
