If you've ever seen any Hawaiian words written down, you'll know that they are extremely long - and often contain the same letters. That's because the Hawaiian language only has 12 letters - including seven consonants and five vowels. This language can be traced back to the early 19th century when Christian missionaries helped native Hawaiian people write down the language they had been speaking for centuries in an effort to publish a Hawaiian Bible.
Although it would take a non-native Hawaiian years to learn this language, one thing to note is that every single Hawaiian word will end in a vowel, no matter what.