Some dialects of Venetian have certain sounds not present in Italian, such as the interdental voiceless fricative , often spelled with , , , or , and similar to English "th" in "thing" and "thought". This sound occurs, for example, in ("supper", also written ), which is pronounced the same as Castilian Spanish (which has the same meaning). The voiceless interdental fricative occurs in Bellunese, north-Trevisan, and in some Central Venetian rural areas around Padua, Vicenza and the mouth of the river Po.