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hang cong » dang cong, hang nong, bang cong
cua tinh » cua sinh, ha tinh, hoa tinh
cong san » cong tac
san toan » van toan, dan toan, manh toan
toan cau » toan cao, toan ban, toan tap
va tinh » may tinh
hanh va » hang va, hanh vi
minh va » tinh va, sinh va, sinh vat