| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been [v-ing] [prep] [adj] years | 21 |
|
| 2 | have been [v-ing] for [adj] years | 18 |
|
| 3 | have been [v-ing] for [adj] years | 18 |
|
| 4 | have been [v-ing] [prep] [num] years | 11 |
|
| 5 | have been [v-ing] [prep] [det] years | 7 |
|
