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APRENDER A RESTARAPRENDER A RESTAR
1-1=01-1=0 2-1=12-1=1 1+1=21+1=2
APRENDER A RESTARAPRENDER A RESTAR
2-0=22-0=2 2-1=12-1=1 2-2=02-2=0
APRENDER A RESTARAPRENDER A RESTAR
3-1=23-1=2 3-2=13-2=1 3-3=03-3=0
APRENDER A RESTARAPRENDER A RESTAR
4-3=14-3=1 4-2=24-2=2 4-1=34-1=3
