module A where
a = 0
a = 1

a = 0o00
a = 0O77

a = 0x00
a = 0XFF

a = 0.00
a = 0.99

a = 0.00e01
a = 0.99E01
a = 0.00e+01
a = 0.99E-01
a = 0.00e-01
a = 0.99E+01

a = 00e01
a = 99E01
a = 00e+01
a = 99E-01
a = 00e-01
a = 99E+01

a = undefined
_a0 = undefined
_A0 = undefined
a0 = undefined
a9 = undefined
aA = undefined
aZ' = undefined

a = True
a = False

a = 'a'
a = 'b'

a = '0'
a = '1'

a = '_'

a = 'A'
a = 'B'

a = ','

a = '!'
a = '#'
a = '$'
a = '%'
a = '&'
a = '⋆'
a = '+'
a = '.'
a = '/'
a = '<'
a = '='
a = '>'
a = '?'
a = '^'
a = '|'
a = '-'
a = '~'
a = ':'
a = '"'

a = [ "\NUL"
    , "\SOH"
    , "\STX"
    , "\ETX"
    , "\EOT"
    , "\ENQ"
    , "\ACK"
    , "\BEL"
    , "\BS"
    , "\HT"
    , "\LF"
    , "\VT"
    , "\FF"
    , "\CR"
    , "\SO"
    , "\SI"
    , "\DLE"
    , "\DC1"
    , "\DC2"
    , "\DC3"
    , "\DC4"
    , "\NAK"
    , "\SYN"
    , "\ETB"
    , "\CAN"
    , "\EM"
    , "\SUB"
    , "\ESC"
    , "\FS"
    , "\GS"
    , "\RS"
    , "\US"
    , "\SP"
    , "\DEL"
    ]