| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] have [been] for centuries | 6 |
|
| 2 | it have [been] for centuries | 6 |
|
| 3 | [pers pn] have [been] for centuries | 6 |
|
| 4 | it have [been] for centuries | 6 |
|
| 5 | have [been] [verb] for centuries | 37 |
|
| 6 | have [been] [vb pp] for centuries | 32 |
|
| 7 | have [been] [adj] for centuries | 8 |
|
| 8 | have [been] [adj] for centuries | 8 |
|
| 9 | have [been] [v-ing] for centuries | 5 |
|
