| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | had been [verb] for [det] years | 37 |
|
| 2 | had been [v-ing] for [det] year | 19 |
|
| 3 | had been [vb pp] for [det] year | 19 |
|
| 4 | had been [verb] for many year | 18 |
|
| 5 | had been [verb] for some year | 11 |
|
| 6 | had been [verb] for several year | 8 |
|
