| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] have been sent [adv prt] | 13 |
|
| 2 | [vb mod] have been sent [adv prt] | 13 |
|
| 3 | should have been sent [adv prt] | 8 |
|
| 4 | should have been sent [adv prt] | 8 |
|
| 5 | have been sent [adv prt] [prep] | 6 |
|
| 6 | have been sent [adv prt] [prep] | 6 |
|
