| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun sg] has been a [adj] [noun sg] | 256 |
|
| 2 | [noun sg] has [been] a major [noun sg] | 35 |
|
| 3 | [noun sg] has [been] a [adj] factor | 16 |
|
| 4 | [noun sg] has [been] a [adj] success | 14 |
|
| 5 | [noun sg] has [been] a great [noun sg] | 14 |
|
| 6 | [noun sg] has [been] a key [noun sg] | 10 |
|
| 7 | result has [been] a [adj] [noun sg] | 10 |
|
| 8 | [noun sg] has [been] a [adj] source | 8 |
|
| 9 | [noun sg] has [been] a particular [noun sg] | 7 |
|
| 10 | [noun sg] has [been] a good [noun sg] | 7 |
|
| 11 | [noun sg] has [been] a [adj] part | 7 |
|
| 12 | [noun sg] has [been] a [adj] feature | 7 |
|
| 13 | [noun sg] has [been] a [adj] cause | 7 |
|
| 14 | [noun sg] has [been] a [adj] increase | 6 |
|
| 15 | [noun sg] has [been] a big [noun sg] | 5 |
|
| 16 | [noun sg] has [been] a [adj] concern | 5 |
|
| 17 | [noun sg] has [been] a central [noun sg] | 5 |
|
| 18 | [noun sg] has [been] a prime [noun sg] | 5 |
|
| 19 | system has [been] a [adj] [noun sg] | 5 |
|
| 20 | [noun sg] has [been] a vital [noun sg] | 5 |
|
| 21 | [noun sg] has [been] a real [noun sg] | 5 |
|
| 22 | [noun sg] has [been] a constant [noun sg] | 5 |
|
