| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] [been] in [adj] years | 8 |
|
| 2 | have [been] in [adj] years | 8 |
|
| 3 | [vb -s] [been] in [adj] years | 6 |
|
| 4 | has [been] in [adj] years | 5 |
|
| 5 | [been] [verb] in [adj] years | 97 |
|
| 6 | [been] [vb pp] in [adj] years | 88 |
|
| 7 | [been] [adj] in [adj] years | 12 |
|
| 8 | [been] [adj] in [adj] years | 12 |
|
| 9 | [been] [v-ing] in [adj] years | 9 |
|
| 10 | [been] make in [adj] years | 8 |
|
| 11 | [been] made in [adj] years | 8 |
|
| 12 | [been] develop in [adj] years | 6 |
|
| 13 | [been] developed in [adj] years | 6 |
|
| 14 | [been] erode in [adj] years | 5 |
|
| 15 | [been] eroded in [adj] years | 5 |
|
