answer
I
V
X
L
C
D
M
1
5
10
50
100
500
1000
II
III
IV
VI
VII
VIII
IX
XI
XII
XIV
XV
XVI
XIX
XX
XXI
XXIV
XXV
XXX
XL
LX
XC
4
9
40
90
400
900
2
3
6
7
8
11
12
20
30
60
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