$a 1
$f%d%x
$d  890177af
$d  13x12
$d  13ax12f
$f%x%d
$d  13xf12
$d  -13x12
$f%i%i
$d  13q14Q
$d  13x14X
$d  13 14
$d  13i14i
$d  13ax12f
$d  --13
$d  -4+5
$d  ++4
$f%3d%*2d%d
$d  1234567
$d  1234 678
$d  12 456 78
$d -1234+678
$f%2x%2x
$d  1234
$d  abcd
$d  1  4
$d  5  8
$d  9  a
$d  b  f
$f%2o%2d
$d  1234
$d  5678
$d  6789
$d  7 9 3
#