| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | had been [vb pp] [art] [num] | 8 |
|
| 2 | had been [verb] the [num] | 7 |
|
| 3 | had been [verb] a [num] | 6 |
|
| 4 | had been [v-ing] [art] [num] | 5 |
|
