| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] [vb infin] been [verb] [adj] years | 6 |
|
| 2 | [vb mod] [vb infin] been [verb] [adj] years | 6 |
|
| 3 | [vb infin] been [verb] [prep] [adj] years | 7 |
|
| 4 | [vb infin] been [verb] [prep] [adj] years | 7 |
|
| 5 | [vb infin] been [verb] [adj] years ago | 6 |
|
| 6 | [vb infin] been [verb] [adj] years ago | 6 |
|
| 7 | [vb infin] been [verb] [adj] years [adv] | 6 |
|
| 8 | [vb infin] been [verb] [adj] years [adv] | 6 |
|
