| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been [verb] as [noun] | 97 |
|
| 2 | have been [vb pp] as [noun] | 94 |
|
| 3 | have been used [prep] [noun] | 69 |
|
| 4 | have been used as [noun] | 21 |
|
| 5 | [verb] been used as [noun] | 21 |
|
| 6 | [vb base] been used as [noun] | 13 |
|
| 7 | have [been] used as [noun] | 13 |
|
| 8 | have be used as [noun] | 13 |
|
| 9 | have [be] used as [noun] | 13 |
|
| 10 | have been use as [noun] | 13 |
|
