| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] [modal v] [adv] have [been] a | 153 |
|
| 2 | it [modal v] [adv] have [been] [art] | 116 |
|
| 3 | it [modal v] [adv] have [been] [art] | 116 |
|
| 4 | it [modal v] [adv] have [been] a | 58 |
|
| 5 | it [modal v] [adv] [verb] [been] a | 49 |
|
| 6 | it [modal v] [adv] [vb infin] [been] a | 49 |
|
| 7 | it [modal v] [adv] have [been] a | 49 |
|
| 8 | it [modal v] [adv] have [be] a | 48 |
|
