As for the high front vowel pair , there are dialectal differences with respect to phonetic realisation of the contrast: in the Bohemian variety of Czech, the two vowels are differentiated by both quality and duration, while in the Eastern Moravian variety of Czech the primary difference is that of duration. Therefore, in the Bohemian variety, the transcription more accurately reflects the trade off between the qualitative and the durational difference in these vowels, while in the Eastern Moravian variety of Czech, the transcription captures the primary durational difference.