string(2) "Ba"
string(2) "bA"
string(2) "B0"
string(2) "b0"
string(3) "AAa"
string(3) "aaA"
string(3) "10a"
string(3) "10A"
string(1) "1"
string(3) "-cd"
string(2) "Z "
string(2) " A"
string(2) "é"
string(15) "あいうえお"
string(2) "α"
string(2) "ω"
string(2) "Α"
string(2) "Ω"
string(8) "foo1.txu"
string(4) "1f.6"
string(9) "foo.1.txu"
string(5) "1.f.6"
string(3) "5e0"
float(6)