[Test1]
Na=1
nExpect=A
[Test2]
Na=2
nExpect=B
[Test3]
Na=26
nExpect=Z
[Test4]
Na=1
nExpect=A
[Test5]
Na=27
nExpect=AA
[Test6]
Na=52
nExpect=AZ
[Test7]
Na=53
nExpect=BA
[Test8]
Na=100
nExpect=CV
[Test9]
Na=
nExpect=
[Test10]
Na=5000
nExpect=GJH
[Test11]
Na=10000
nExpect=NTP
[Test12]
Na=2147483647
nExpect=FXSHRXW