In Dixon v. Heckler, 811 F.2d 506 (10th Cir.1987), the claimant had completed six or seven years of formal schooling, but she testified that she could not read a newspaper, and both she and her sister testified that she could not write. The court concluded that although "there was evidence that the claimant could read, albeit with difficulty," a finding of literacy was not supported by the evidence because there was "simply no indication that the claimant could 'write a simple message such as instructions or inventory lists,' " a prerequisite, according to the court, to a finding of literacy under the regulations. Dixon, 811 F.2d at 510.