| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] been [verb] for centuries | 37 |
|
| 2 | have [been] [verb] for centuries | 37 |
|
| 3 | [verb] [been] [vb pp] for centuries | 32 |
|
| 4 | [vb -s] [been] [verb] for centuries | 20 |
|
| 5 | has [been] [verb] for centuries | 18 |
|
| 6 | have [been] [verb] for centuries | 10 |
|
| 7 | [vb base] [been] [verb] for centuries | 10 |
|
| 8 | had [been] [verb] for centuries | 7 |
|
| 9 | [vb past] [been] [verb] for centuries | 7 |
|
| 10 | [verb] [been] [v-ing] for centuries | 5 |
|
