From 10 to 2
15
1111
1101
13
14
E
D
13
1101
D
25
11001
10101
21
25
19
33
51
101001
29
68
1000100
110010
50
72
48
8E
142
111011
3B
145
10010001
11011011
219
197
C5
4B1
1201
101001010
14A
317
100111101
1010101010
682
2415
96F
2A06
10758
1010101111001101
ABCD