17_25
17<25
16 + 2
18
19-12
7
16_61
16<61
23_24
23<24
2+10
12
7-6
1
16+9
25
40_19
40>19
21+1
22
16-4
6-7
-1
40_04
40>04
19+3
12-2
10
61_61
165_0165
165=0165
500+2
502
541-11
30
5311+5000
10,311
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