| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] have a | 7207 |
|
| 2 | should [verb] a | 2320 |
|
| 3 | should [vb infin] a | 2319 |
|
| 4 | should have [art] | 1183 |
|
| 5 | should have [art] | 1183 |
|
| 6 | should have a | 749 |
|
| 7 | should have a | 647 |
|
