| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | has [been] [adv] for [adj] years | 8 |
|
| 2 | has been [adv] for [adj] years | 8 |
|
| 3 | has be [adv] for [adj] years | 8 |
|
| 4 | has [be] [adv] for [num] years | 8 |
|
