prompt: Q: What is 81 minus 50? A: 
random_counterfactual.prompt: Q: What is 44 minus 31? A: 
ones_op1_counterfactual.prompt: Q: What is 84 minus 50? A: 
ones_op2_counterfactual.prompt: Q: What is 81 minus 50? A: 
tens_op1_counterfactual.prompt: Q: What is 81 minus 50? A: 
tens_op2_counterfactual.prompt: Q: What is 81 minus 10? A: 
ones_carry_counterfactual.prompt: Q: What is 90 minus 59? A: 
tens_carry_counterfactual.prompt: Q: What is 81 minus 50? A: 