ばびぶべぼ (ba-bi-bu-be-bo) is most commonly used with Japanese.

Japanese letters are different from English letters. In Japanese "ka" is a single letter, while in English that is a consonant, k, and a vowel, a--two different letters. Japanese also has single letters that are single letters in English (A, E, I, O, U; N) and single letters that are three letters in English (KYA, SHA, CHA, NYA, HYA, MYA, RYA, GYA, BYA, PYA, KYU, SHU, CHU, NYU, HYU, MYU, RYU, GYU, BYU, PYU, KYO, SHO, NYO, HYO, MYO, RYO, GYO, BYO; PYO).

What you do in ba-bi-bu-be-bo is add "b" after every [Japanese] letter, except "n," and then add the vowel from the letter before the "b."

Ex.: "Konnichi wa" (こんにちは) (good afternoon (informal)) is made up of five letters, "ko," "n," "ni," "chi," and "wa." We add "b" after every letter (except "n"): Kob-n-nib-chib-wab. And then add the vowel in each letter before the "b" to after the "b" (making a new [Japanese] letter): Kobo-n-nibi-chibi-waba (kobonnibichibiwaba - こぼんにびちびわば).

Another example is "arigatou" (ありがとう) (thank you) which has five letters: a-ri-ga-to-u. This becomes "ab-rib-gab-tob-ub," and then "aba-ribi-gaba-tobo-ubu" (abaribigabatoboubu - あばりびがばとぼうぶ).

Can you decipher these?

01. Gobomeben nabasabaibi (ごぼめべんなばさばいび)

02. Obohabayoboubu (おぼはばよぼうぶ)

03. Habanaba (はばなば)

The answers...

01. Gomen nasai (ごめんなさい) (I'm sorry)

02. Ohayou (おはよう) (Good morning (informal))

03. Hana (はな) (flower)