prompt: Q: What is 81 minus 66? A: 
random_counterfactual.prompt: Q: What is 69 minus 34? A: 
ones_op1_counterfactual.prompt: Q: What is 87 minus 66? A: 
ones_op2_counterfactual.prompt: Q: What is 81 minus 60? A: 
tens_op1_counterfactual.prompt: Q: What is 91 minus 66? A: 
tens_op2_counterfactual.prompt: Q: What is 81 minus 36? A: 
ones_carry_counterfactual.prompt: Q: What is 88 minus 63? A: 
tens_carry_counterfactual.prompt: Q: What is 81 minus 66? A: 