A         colB        C D
aaa          1    10e20 1.0
b          1.1     -1.0 1
ccccc     1000     0x01 Letter
e e      12345    10000 234
efghigkl    -1       .1 -234
            +1 -10e-100 -10e-100
             0 -10e+100 -10e+100
