| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be valid [coord] need [adv] [vb infin] | 5 |
|
| 2 | be valid [conj] need [adv] [vb infin] | 5 |
|
| 3 | be valid and need [adv] [vb infin] | 5 |
|
| 4 | be valid and need [adv] [vb infin] | 5 |
|
| 5 | be valid [conj] need [adv] [vb infin] | 5 |
|
| 6 | be valid [conj] need only [vb infin] | 5 |
|
| 7 | be valid [conj] need [adv] approximate | 5 |
|
