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thoai trong » thoai thong, ngoai trong, tai trong
khoa thoai » hoa thai, hoi thoai, khoa than
phan thong » phan thuong, phan hong, phan tong
cach khoa » cac khoa, cac khoan, anh khoa
sach thai » sach tham, sac thai, sach tai
thai thuc » thai thuy, thai tuc, tham thuc
thuc bach » truc bach, thuc cach, thuoc sach
bach khoa » anh khoa
khoa phan » hoa phan, khoa than, khoa phau
tu lanh » tu hanh, tu lenh, tu manh
tu cach » tu cac
tu sach » thu sach, su sach, te sach
dao tu » dao tuc, dao tru, tao tu