| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [been] [verb] to [adj] [noun] | 805 |
|
| 2 | [been] [vb pp] to [adj] [noun] | 766 |
|
| 3 | [be] extended to [adj] [noun] | 132 |
|
| 4 | [been] extended [prep] [adj] [noun] | 33 |
|
| 5 | [been] extend to [adj] [noun] | 20 |
|
