prompt: Q: How much is 39 minus 12? A: 
random_counterfactual.prompt: Q: How much is 50 minus 23? A: 
ones_op1_counterfactual.prompt: Q: How much is 38 minus 12? A: 
ones_op2_counterfactual.prompt: Q: How much is 39 minus 11? A: 
tens_op1_counterfactual.prompt: Q: How much is 79 minus 12? A: 
tens_op2_counterfactual.prompt: Q: How much is 39 minus 12? A: 
ones_carry_counterfactual.prompt: Q: How much is 45 minus 18? A: 
tens_carry_counterfactual.prompt: Q: How much is 39 minus 12? A: 