4-0=                  5+1=                      3-2=

2+4=                 6-3=                       3+3=

0+5=                 6-0=                       0+6=

3+5=             0+3=             4-0=             0+6=

6-2=             2+4=             6+1=             6-3=

7-3=             3+2=             6-5=             6-4=

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