| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | colitis [conj] crohn ['s] [noun] | 59 |
|
| 2 | [noun] and crohn ['s] [noun] | 50 |
|
| 3 | colitis and crohn [unc] [noun] | 43 |
|
| 4 | colitis and [noun] ['s] [noun] | 43 |
|
