| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [art] [noun sg] has [been] described | 19 |
|
| 2 | [art] [noun sg] has been described | 19 |
|
| 3 | [art] [noun sg] has be described | 19 |
|
| 4 | the [noun sg] has [be] described | 17 |
|
