| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been [v-ing] for years | 79 |
|
| 2 | have [been] [v-ing] for years | 25 |
|
| 3 | had [been] [v-ing] for years | 18 |
|
| 4 | 've [been] [v-ing] for years | 11 |
|
| 5 | has [been] [v-ing] for years | 10 |
|
| 6 | have [been] trying for years | 9 |
|
| 7 | 's [been] [v-ing] for years | 8 |
|
