| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | had been [v-ing] for [num] years | 25 |
|
| 2 | had been [v-ing] for [num] hours | 7 |
|
| 3 | had been [v-ing] for two [noun pl] | 7 |
|
| 4 | had been missing for [num] [noun pl] | 6 |
|
| 5 | had been [v-ing] for [num] months | 5 |
|
