prompt: The difference between 66 and 39 is: 
random_counterfactual.prompt: The difference between 68 and 27 is: 
ones_op1_counterfactual.prompt: The difference between 69 and 39 is: 
ones_op2_counterfactual.prompt: The difference between 66 and 33 is: 
tens_op1_counterfactual.prompt: The difference between 76 and 39 is: 
tens_op2_counterfactual.prompt: The difference between 66 and 19 is: 
ones_carry_counterfactual.prompt: The difference between 68 and 31 is: 
tens_carry_counterfactual.prompt: The difference between 66 and 39 is: 