| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | had [been] a [noun sg] | 1477 |
|
| 2 | it had [been] a | 545 |
|
| 3 | it had a [noun sg] | 233 |
|
| 4 | it had [been] [noun sg] | 44 |
|
| 5 | it [been] a [noun sg] | 18 |
|
