- aa - longer "ah"
- Japanese Gachimuchi fans sometimes replace any instance of "a" with アッー! Many place names and products from Shinnippori are examples of this tradition, such as a local shop known as Coco StoAAAHre (ココストアッー).
- ii - longer "ee"
- いい男 (ii otoko, "a good [handsome] guy")
- uu - longer "ooh"
- ee, ei - longer "eh"
- oo, ou - longer "oh"