| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have never [been] seen | 24 |
|
| 2 | [verb] never [been] seen | 24 |
|
| 3 | has never [been] seen | 12 |
|
| 4 | [vb -s] never [been] seen | 12 |
|
| 5 | [vb past] never [been] seen | 7 |
|
| 6 | had never [been] seen | 7 |
|
| 7 | [vb base] never [been] seen | 5 |
|
| 8 | never [adv] [been] seen | 5 |
|
| 9 | never [been] seen [prep] | 10 |
|
| 10 | never [been] seen [prep] | 10 |
|
| 11 | never [been] seen [adv] | 8 |
|
| 12 | never [been] seen [adv] | 8 |
|
| 13 | never [been] seen before | 6 |
|
| 14 | never [been] seen before | 6 |
|
| 15 | never [been] seen in | 5 |
|
| 16 | never [been] seen in | 5 |
|
