prompt: The difference between 87 and 29 is: 
random_counterfactual.prompt: The difference between 74 and 50 is: 
ones_op1_counterfactual.prompt: The difference between 89 and 29 is: 
ones_op2_counterfactual.prompt: The difference between 87 and 21 is: 
tens_op1_counterfactual.prompt: The difference between 67 and 29 is: 
tens_op2_counterfactual.prompt: The difference between 87 and 59 is: 
ones_carry_counterfactual.prompt: The difference between 88 and 20 is: 
tens_carry_counterfactual.prompt: The difference between 87 and 29 is: 