| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] [been] [v-ing] [adv prt] | 1378 |
|
| 2 | [modal v] [verb] [been] [v-ing] | 1004 |
|
| 3 | [modal v] [verb] [v-ing] [adv prt] | 352 |
|
| 4 | [modal v] [verb] [been] [adv prt] | 172 |
|
