Difficult in Hexadecimal

64 69 66 66 69 63 75 6C 74

Character Breakdown

Char	Hex	Decimal
d	0x64	100
i	0x69	105
f	0x66	102
f	0x66	102
i	0x69	105
c	0x63	99
u	0x75	117
l	0x6C	108
t	0x74	116

Difficult in Other Codes

Difficult in Morse Code Difficult in Binary Difficult in Braille Difficult in NATO Alphabet