This is a list of the most common syllables in Vietnamese created by sampling pages from the Vietnamese Wikipedia.
There will be some artefacts due to how this list was compiled. There were some heuristics used to decide if a syllable "looks" Vietnamese, but they are not perfect. Some non-Vietnamese items probably snuck in.
Each line contains one or more variants that result from a normalization process:
All capital and lowercase letters were normalized.
Also all "y"s and "i"s are normalized due to variant spellings and complex rules of when to use which. I'll try to address this is a future version.
Feel free to make manual corrections to this list.