C u1eb7c To B u1eafn Tinh D u1ed3n D u1eadp
Gia u0309i kha u0301t cu ocirc u0301i tu acirc u0300n
Ch u01a1i L uacute t C aacute n 2
R ecirc n trong sung s u01b0 u01a1 u0301ng p1