As phonetic and phonological differences between the dialects began to magnify, many regions, particularly the Vannes country, began to devise their own orthographies. Many of these orthographies were more closely related to the French model, albeit with some modifications. Examples of these modifications include the replacement of Old Breton with to denote word-final /x~h/ (an evolution of Old Breton /θ/ in the Vannes dialect) and use of to denote the initial mutation of /k/ (today this mutation is written ). and thus needed another transcription.