| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | had [verb] a series | 50 |
|
| 2 | [vb past] [vb pp] a series | 47 |
|
| 3 | [vb past] [to-vb] a series | 26 |
|
| 4 | began [verb] a series | 12 |
|
| 5 | [vb past] publish a series | 6 |
|
| 6 | [vb past] [v-ing] a series | 5 |
|
