| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been [verb] [adv] for years | 21 |
|
| 2 | have [been] [verb] [adv] for years | 21 |
|
| 3 | have [been] [v-ing] [adv] for years | 20 |
|
| 4 | have [been] [verb] [adv] for years | 6 |
|
| 5 | has [been] [verb] [adv] for years | 6 |
|
| 6 | had [been] [verb] [adv] for years | 6 |
|
