IN：
{}
{ABC}
{ABCDEFGHIJKLMNOPQRSTUVWXYZ}
({})
({A})
{A}+{Z}
{ABC}+{DEFG}+{Z}+{}
{AC}+({B}+{C})
{ABE}*{ABCD}
{ABCDEFGHIJKLMNOPQRSTUVWXYZ}*{ABCDEFGHIJKLMNOPQRSUVWXYZ}*{ABCDEFGHIJKLMNOPQRSTUVWYZ}*{ABCDEFGHIJKLMNOPQRSTUVWXYZ}
{ABCD}-{CZ}
{ABC}+{CDE}*{CEZ}
({ABC}+{CDE})*{CEZ}
({CDEFGIJKLMNOPQRSTUVWXYZ}-{}+{F})+({ABCDE}-{H}-{A}-{B})
({A})+({ABCD}-{CZ}*{CZ})
(({CDEFGIJKLMNOPQRSTUVWXYZ}-{}+{F})+({ABCDE}-{H}-{A}-{B}))-({A})+({ABCD}-{CZ}+{CZ}*{CZ})
{YZ}+{AB}*{BC}
{YZ}+{AB}*{BC}-{Z}

OUT：
{}
{ABC}
{ABCDEFGHIJKLMNOPQRSTUVWXYZ}
{}
{A}
{AZ}
{ABCDEFGZ}
{ABC}
{AB}
{ABCDEFGHIJKLMNOPQRSUVWYZ}
{ABD}
{ABCE}
{CE}
{CDEFGIJKLMNOPQRSTUVWXYZ}
{ABD}
{ABCDEFGIJKLMNOPQRSTUVWXYZ}
{BYZ}
{BY}