[hwntw]

The main difference here is orthography as opposed to the actual pronunciation of the word - Welsh uses y and w as vowels, as well as multiple 2-letter clusters for a single sound (eg, dd is the same as one of the English th sounds, or rh and ll are both single sounds).

So in that sense, a word that may look bad (eg bwyta, to eat) actually has no consonant clusters in it - actually being pronounced 'boy-ta'.