prompt: The difference between 91 and 63 is: 
random_counterfactual.prompt: The difference between 27 and 20 is: 
ones_op1_counterfactual.prompt: The difference between 94 and 63 is: 
ones_op2_counterfactual.prompt: The difference between 91 and 60 is: 
tens_op1_counterfactual.prompt: The difference between 81 and 63 is: 
tens_op2_counterfactual.prompt: The difference between 91 and 23 is: 
ones_carry_counterfactual.prompt: The difference between 99 and 61 is: 
tens_carry_counterfactual.prompt: The difference between 91 and 63 is: 