| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] could [adv] have been a | 16 |
|
| 2 | [noun] could [adv] have been a | 8 |
|
| 3 | [noun sg] could [adv] have been a | 7 |
|
| 4 | there could [adv] have been a | 7 |
|
| 5 | [ex0] could [adv] have been a | 7 |
|
| 6 | [pers pn] could [adv] have been a | 7 |
|
| 7 | there could [adv] have been a | 7 |
|
| 8 | could [adv] [adv] have been a | 10 |
|
| 9 | could [adv] [adv] have been a | 9 |
|
| 10 | could so [adv] have been a | 6 |
|
| 11 | could so [adv] have been a | 6 |
|
| 12 | could [adv] [adv] have been a | 9 |
|
| 13 | could [adv] [adv] have been a | 9 |
|
| 14 | could [adv] easily have been a | 6 |
|
| 15 | could [adv] easily have been a | 6 |
|
| 16 | could [adv] have been a [noun] | 21 |
|
| 17 | could [adv] have been a [noun sg] | 19 |
|
| 18 | could [adv] have been a [adj] | 10 |
|
| 19 | could [adv] have been a [adj] | 6 |
|
