| Sentence with the lowest reproduction rate | 
|---|
| The signs and symptoms of Norwalk virus infection are nausea, vomiting, diarrhea and stomach cramps. | 
|---|
| Lexical level | Syntactic level | 
| Source
Language | Errors | Source
Language | Errors | 
| symptoms | synptoms, symptons, synpton | signs and
symptoms | sign and
symptom | 
| nausea | nousea, nusia, neusea, nosia | signs and
symptoms are | signs and
symptoms is | 
| vomiting | vormiting, vomitting |  |  | 
| diarrhea | diaria, diarrea, diarier |  |  | 
| stomach cramps | stomach clamps, stmack, crumps |  |  | 
								Int J Med Educ. 2018; 9:101-107; doi: 10.5116/ijme.5abe.0eb5