5
z
y*S
((Q+(D)*5*((Y)+U*((V))*3)))+7+x+F*5*A
X*y+y*H
J+z+B+7+J+(7+5)*3
y*z*3+3*z*x
L
8*(8+6+3+U+C)+8
7
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<term>::=<element>|<element>|<element>*<term>