| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | has been [v-ing] [prep] [adj] years | 61 |
|
| 2 | [vb -s] been [v-ing] for [adj] years | 60 |
|
| 3 | [vb -s] been [v-ing] [prep] [num] years | 53 |
|
| 4 | [vb -s] been running [prep] [adj] years | 14 |
|
| 5 | [vb -s] been [v-ing] [prep] three years | 8 |
|
| 6 | [vb -s] been [v-ing] [prep] three years | 8 |
|
| 7 | [vb -s] been [v-ing] [prep] [det] years | 7 |
|
| 8 | [vb -s] been trying [prep] [adj] years | 5 |
|
