int main(){
assert('∠'=='∠');
assert('∡'=='∡');
assert('ℶ'=='ℶ');
assert('‵'=='‵');
assert('∁'=='∁');
assert('ℸ'=='ℸ');
assert('ℓ'=='ℓ');
assert('∅'=='∅');
assert('ℷ'=='ℷ');
assert('ℑ'=='ℑ');
assert('ı'=='ı');
assert('∄'=='∄');
assert('Ⓢ'=='Ⓢ');
assert('ℏ'=='ℏ');
assert('ℜ'=='ℜ');
assert('﹨'=='&sbsol;');
assert('′'=='&vprime;');
assert('℘'=='℘');
return 0;
}