Romaji writing style in Japanese(^,^)/

There are several style on Romaji writing that might confused you 

(and me before)Until today, i haven't found yet reference books (or any source) that explain about that..So, what i'm going to explain to you is based on my experience & own thinking neeee!!^^

Okay! let's start with the most common style!

i named these style as 'OU' style & 'OO' style!

(please noted that this is based on my experience & thinking)

1. OU/OO style

For example, [DOUMO]

There are books out there that write as DOUMO..that's OU style..

but there are also books that write as DOOMO..that's OO style..

Other examples:

OU

SAYOUNARA

OHAYOU

DOU ITASHIMASITE

OO

SAYOONARA

OHAYOO

DOO ITASHIMASHITE

OH style

However, I found a book which used different style to write words as above..it used OH style*

DOHMO

SAYOHNARA

OHAYOH

DOH ITASHIMASHITE

For me, whichever style is correct! as long as the pronunciation is a bit longer okay!^^

But, I prefer use OU style as my writing style to write Japanese in Romaji cos it more practical^^

ど     う    　も

DO      U         MO

Okay!next time I’ll explain other writing style ne

Alright! Take care^^