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thoai trong » thoai thong, ngoai trong, tai trong
phau thong » phap thong, khau thong, phan thong
khoa phau » hoa phan, khoa kham, khoa than
thuc bach » truc bach, thuc cach, thuoc sach
bach than » bach khang, sach tham, ban than
sach tai » sach bai, sach tham, sach dao
tai thuc » thai thuc, tri thuc, dai thuc
thuc cac » thuc cach, tuc cac, phuc cac
cac khoa » cac khoan, cac khoi, dac khoa
sach thu » sach thue, sach thieu, sach tham
thu thuc » thuc thuc, thu thuoc, thue thuc
tu sach » thu sach, te sach, tu cach
su sach » so sach, vu sach