| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] for about [adj] years | 92 |
|
| 2 | [noun] for about [num] years | 92 |
|
| 3 | [noun] for [adv] four years | 24 |
|
| 4 | [noun] for about four [noun] | 19 |
|
| 5 | [noun] for about four [noun pl] | 18 |
|
| 6 | [noun] [prep] about four years | 9 |
|
| 7 | [noun] [prep] about four years | 9 |
|
| 8 | [noun] for about four years | 6 |
|
| 9 | [noun] for about four years | 6 |
|
| 10 | [noun] for about four year | 6 |
|
