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toan khong » toan thong, toan khung, toan thuong
khong cong » thong cong, khong cang, chong cong
theo chau » theo chieu, theo phap, theo cap
cong toan » cong tan, cong hoan, cong tuan
theo chu » theo chieu, cho chu, chao chu
cong ban » cong bang, cong san, cong tan
ban toan » bai toan, ban than, van toan
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