| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] [prep] a [num] years | 65 |
|
| 2 | [verb] [prep] a [num] years | 52 |
|
| 3 | [adv] [prep] a [num] years | 44 |
|
| 4 | [noun sg] [prep] a [num] years | 42 |
|
| 5 | [adv] [prep] a [num] years | 24 |
|
| 6 | [vb pp] [prep] a [num] years | 23 |
|
| 7 | [adj] [prep] a [num] years | 22 |
|
| 8 | [noun pl] [prep] a [num] years | 18 |
|
| 9 | [not/n't] [prep] a [num] years | 11 |
|
| 10 | not [prep] a [num] years | 11 |
|
| 11 | not [prep] a [num] years | 11 |
|
| 12 | [adv prt] [prep] a [num] years | 9 |
|
| 13 | [vb past] [prep] a [num] years | 9 |
|
| 14 | [adj] [prep] a [num] years | 9 |
|
| 15 | [conj] [prep] a [num] years | 8 |
|
| 16 | [pron] [prep] a [num] years | 8 |
|
| 17 | [vb infin] [prep] a [num] years | 8 |
|
| 18 | [det] [prep] a [num] years | 7 |
|
| 19 | [v-ing] [prep] a [num] years | 7 |
|
| 20 | once [prep] a [num] years | 6 |
|
| 21 | once [prep] a [num] years | 6 |
|
| 22 | [num] [prep] a [num] years | 6 |
|
| 23 | [pers pn] [prep] a [num] years | 5 |
|
| 24 | [prep] [adv] a [num] years | 51 |
|
| 25 | [prep] [adv] a [num] years | 51 |
|
| 26 | [prep] over a [num] years | 21 |
|
| 27 | [prep] over a [num] years | 21 |
|
| 28 | [prep] least a [num] years | 9 |
|
| 29 | [prep] least a [num] years | 9 |
|
| 30 | [prep] about a [num] years | 8 |
|
