00 + 00 ==> 00
01 + 05 ==> 06
02 + 0a ==> 0c
03 + 0f ==> 12
04 + 14 ==> 18
05 + 19 ==> 1e
06 + 1e ==> 24
07 + 23 ==> 2a
08 + 28 ==> 30
09 + 2d ==> 36
