| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is [adj] [to-vb] [adv] | 2636 |
|
| 2 | is [adj] [to-vb] [adv] | 1216 |
|
| 3 | is [adj] [to-vb] [adv prt] | 837 |
|
| 4 | is [adj] [to-vb] [Wh adv] | 674 |
|
| 5 | is [adj] [to-vb] how | 451 |
|
| 6 | is [adj] [to-vb] how | 451 |
|
| 7 | is difficult [to-vb] [adv] | 352 |
|
| 8 | is difficult [to-vb] [adv] | 352 |
|
| 9 | is [adj] to see [adv] | 332 |
|
| 10 | is likely [to-vb] [adv] | 305 |
|
| 11 | is likely [to-vb] [adv] | 305 |
|
| 12 | is [adj] [to-vb] out | 270 |
|
| 13 | is [adj] [to-vb] out | 270 |
|
| 14 | is possible [to-vb] [adv] | 214 |
|
| 15 | is possible [to-vb] [adv] | 214 |
|
| 16 | is [adj] [to-vb] up | 204 |
|
| 17 | is [adj] [to-vb] up | 204 |
|
| 18 | is easy [to-vb] [adv] | 188 |
|
| 19 | is hard [to-vb] [adv] | 183 |
|
| 20 | is hard [to-vb] [adv] | 175 |
|
| 21 | is easy [to-vb] [adv] | 160 |
|
| 22 | is [adj] [to-vb] why | 160 |
|
| 23 | is [adj] [to-vb] why | 160 |
|
| 24 | is necessary [to-vb] [adv] | 153 |
|
| 25 | is necessary [to-vb] [adv] | 153 |
|
| 26 | is important [to-vb] [adv] | 151 |
|
| 27 | is important [to-vb] [adv] | 151 |
|
| 28 | is able [to-vb] [adv] | 112 |
|
| 29 | is able [to-vb] [adv] | 112 |
|
| 30 | is [adj] [to-vb] so | 106 |
|
