| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | had been [verb] for [adj] months | 20 |
|
| 2 | had been [verb] for [num] months | 14 |
|
| 3 | had been [vb pp] for [adj] months | 12 |
|
| 4 | had been [v-ing] for [adj] months | 8 |
|
| 5 | had been [verb] for [det] months | 6 |
|
