| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | been [v-ing] this for [adj] years | 6 |
|
| 2 | been [v-ing] this [prep] [num] years | 6 |
|
| 3 | been [v-ing] this [prep] [adj] years | 6 |
|
| 4 | been doing this [prep] [adj] years | 5 |
|
