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phan thong » phan thuong, phan hong, phan tong
khoa thong » hoa thong, thoai thong, pho thong
khoa khoa » hoa khoa, khuan khoa, khoa hoc
sach tham » sach nha
tham thuc » nham thuc, pham thuc, tam thuc
thuc cach » thuoc sach, truoc cach, thuc hanh
sach thi » sach thu, sach tai, sach thieu
thi phuc » thi phu, thi thuc, thien phuc
phuc cac » phuc cam, phuc ca, phuc cham
cac khoa » cac khoan, cac khoi, dac khoa
cach hoc » cach thuc, cach thoi, dich hoc
hoc phan » hoc dan, hoc pho
tu sach » thu sach, su sach, te sach