| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been in existence for [num] | 10 |
|
| 2 | [verb] been in existence for [num] | 10 |
|
| 3 | [vb -s] been in existence for [num] | 5 |
|
| 4 | has been in existence for [num] | 5 |
|
| 5 | been in existence for [num] [noun] | 11 |
|
| 6 | been in existence for [num] [noun pl] | 11 |
|
| 7 | been in existence for [num] years | 10 |
|
| 8 | been in existence for [num] year | 10 |
|
