| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | been [verb] [prep] recent years | 96 |
|
| 2 | been develop [prep] [adj] years | 12 |
|
| 3 | been develop [prep] [adj] years | 6 |
|
| 4 | been develop [prep] recent [noun] | 6 |
|
| 5 | been develop [prep] recent [noun pl] | 6 |
|
| 6 | been develop [prep] recent years | 6 |
|
| 7 | be develop [prep] recent years | 6 |
|
| 8 | [been] develop [prep] recent years | 6 |
|
| 9 | [be] develop [prep] recent years | 6 |
|
| 10 | been develop [prep] recent year | 6 |
|
| 11 | been develop [prep] recent years | 6 |
|
