| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb base] been describe in this [noun] | 6 |
|
| 2 | have [been] describe in this [noun] | 6 |
|
| 3 | [vb base] [been] describe in this [noun sg] | 6 |
|
| 4 | [vb base] [been] described in this [noun] | 5 |
|
| 5 | [vb base] [been] describe in this chapter | 5 |
|
| 6 | [vb base] [been] describe in this chapter | 5 |
|
