The chart below shows the EUR/JPY and the GBP/JPY, together.
Basically...
if one pair makes a lower low and the other does not, you buy the one that does not.
if one pair makes a higher high and the other does not, you sell the one that does not.
Basically...
if one pair makes a lower low and the other does not, you buy the one that does not.
if one pair makes a higher high and the other does not, you sell the one that does not.