Saya mau tau Vokal dari Basa Swédia. Jelaskan dalam bahasa sunda

Swedish vowels are contrastive in terms of quality, and the frontal vowels appéar in rounded-unrounded pairs. Unstressed  is rendered as  (schwa) in most dialects, and a lowering of vowels is very common before  and the various retroflex assimilations resulting from it (see below). Various patterns of diphthongs occur in different dialect groups. Among the most distinguishable are those of Skåne in southern Sweden and in Gotland.