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version()
5.6.48
a_len_1 ca_len_1
3 3
5 5
10 10
b_str b_byte_len b_char_len
xxx 3 3
yyyyy 5 5
zzzzzzzzzz 10 10
あ A い I う U え E お O. 48 30
想看什頭清只傷精,中美觀的接委主們認可易畫等助海因 163 75