We explore the feasibility of using only unsupervised means to identify non-words, i.e. typos, in a frequency list derived from a large corpus of Dutch and to distinguish between these non-words and real-words in the language. We call the system we built and evaluate in this paper CICCL, which stands for ‘Corpus-Induced Corpus Clean-up’. The algorithm on which CICCL is primarily based is the an...