What Japanese On'yomi has Vietnamese of M u?
CREATE TABLE table_66191 (
    "Celestial Stem" text,
    "Chinese Mandarin Pinyin" text,
    "Cantonese Jyutping" text,
    "Wuu Wuupin" text,
    "Japanese kunyomi" text,
    "Japanese on'yomi" text,
    "Korean ( RR )" text,
    "Manchu ( M\u00f6llendorff )" text,
    "Vietnamese" text,
    "Yin and Yang ( \u9670\u967d )" text,
    "Wu Xing ( \u4e94\u884c )" text,
    "Wu xing correlations" text
)
SELECT "Japanese on'yomi" FROM table_66191 WHERE "Vietnamese" = 'mậu'
Below are sql tables schemas paired with instruction that describes a task. Using valid SQLite, write a response that appropriately completes the request for the provided tables. ### Instruction: What Japanese On'yomi has Vietnamese of M u? ### Input: CREATE TABLE table_66191 (
    "Celestial Stem" text,
    "Chinese Mandarin Pinyin" text,
    "Cantonese Jyutping" text,
    "Wuu Wuupin" text,
    "Japanese kunyomi" text,
    "Japanese on'yomi" text,
    "Korean ( RR )" text,
    "Manchu ( M\u00f6llendorff )" text,
    "Vietnamese" text,
    "Yin and Yang ( \u9670\u967d )" text,
    "Wu Xing ( \u4e94\u884c )" text,
    "Wu xing correlations" text
) ### Response: SELECT "Japanese on'yomi" FROM table_66191 WHERE "Vietnamese" = 'mậu'