<br>"" Letters that are not in the English alphabet, or have different sounds. CH sounds like the 'KH' in Ayatollah Khoumeini. DD is said like the TH in 'there'. F is said like the English 'V'. FF is said like the English 'F'. NG sounds like it would in English but it is tricky because it comes at the beginnings of words (for example 'fy ngardd' - my garden). One trick is to blend it in with the word before it. LL sounds like a cat hissing. PH sounds like the English 'F' too, but it is only used in mutations. RH sounds like an 'R' said very quickly before a 'H'. TH sounds like the 'TH' in 'THin'. W has been explained in the sentences before about vowels.