| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | had been [vb pp] [adv] for a | 16 |
|
| 2 | had been [verb] [adv prt] for a | 13 |
|
| 3 | had been [verb] [adv] for a | 10 |
|
| 4 | had been [v-ing] [adv] for a | 7 |
|
