| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | has been [verb] [prep] a [noun] | 1057 |
|
| 2 | has been [vb pp] [prep] a [noun] | 997 |
|
| 3 | has been described [prep] [art] [noun] | 49 |
|
| 4 | has been described [prep] [art] [noun] | 49 |
|
| 5 | have been described [prep] a [noun] | 35 |
|
| 6 | [verb] been described [prep] a [noun] | 35 |
|
| 7 | has been described [prep] a [noun] | 28 |
|
| 8 | [vb -s] been described [prep] a [noun] | 27 |
|
| 9 | has [been] described [prep] a [noun] | 26 |
|
| 10 | has [be] described [prep] a [noun] | 26 |
|
| 11 | has be described [prep] a [noun] | 26 |
|
| 12 | has been describe [prep] a [noun] | 26 |
|
| 13 | has been described [prep] a [noun] | 26 |
|
