prompt: Q: What is 66 minus 39? A: 
random_counterfactual.prompt: Q: What is 79 minus 48? A: 
ones_op1_counterfactual.prompt: Q: What is 69 minus 39? A: 
ones_op2_counterfactual.prompt: Q: What is 66 minus 30? A: 
tens_op1_counterfactual.prompt: Q: What is 56 minus 39? A: 
tens_op2_counterfactual.prompt: Q: What is 66 minus 19? A: 
ones_carry_counterfactual.prompt: Q: What is 67 minus 30? A: 
tens_carry_counterfactual.prompt: Q: What is 66 minus 39? A: 