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phan thuong » hang thuong, phan xuong
thuc thanh » thuoc thanh, thuc hanh, phuc thanh
phong phai » khong phai, phong phat, phong phoi
phai thong » phap thong, phai tuong, phan thong
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vu sach » vu bach, su sach, vu khach
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gi thuc » gia thuc, nghi thuc, gioi thuc