| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | had [been] [noun] | 1451 |
|
| 2 | have [been] president | 40 |
|
| 3 | [verb] [been] president | 40 |
|
| 4 | [vb past] [been] president | 31 |
|
| 5 | had [be] president | 29 |
|
