| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] have been [verb] [adv prt] the | 12 |
|
| 2 | [vb mod] have been [verb] [adv prt] the | 12 |
|
| 3 | [modal v] have been [v-ing] [adv prt] the | 8 |
|
