| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | been [v-ing] [det] for [adj] years | 8 |
|
| 2 | been [v-ing] [det] [prep] [num] years | 8 |
|
| 3 | been doing [det] [prep] [adj] years | 6 |
|
| 4 | been [v-ing] this [prep] [adj] years | 6 |
|
