| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | may [adv] have been [prep] [adj] | 18 |
|
| 2 | may [adv] have been [prep] [adj] | 12 |
|
| 3 | may [adv] have been [prep] [det] | 11 |
|
| 4 | may not have been [prep] [adj] | 6 |
|
| 5 | may [adv] have been [prep] [adj] | 6 |
|
| 6 | may not have been [prep] [adj] | 6 |
|
| 7 | may [not/n't] have been [prep] [adj] | 6 |
|
| 8 | may [adv] have been in [adj] | 6 |
|
