prompt: The difference between 81 and 56 is: 
random_counterfactual.prompt: The difference between 65 and 20 is: 
ones_op1_counterfactual.prompt: The difference between 87 and 56 is: 
ones_op2_counterfactual.prompt: The difference between 81 and 50 is: 
tens_op1_counterfactual.prompt: The difference between 61 and 56 is: 
tens_op2_counterfactual.prompt: The difference between 81 and 16 is: 
ones_carry_counterfactual.prompt: The difference between 86 and 51 is: 
tens_carry_counterfactual.prompt: The difference between 81 and 56 is: 