# 循环从 65 到 90（包含 90）
import json

c = []
for i in range(65, 91):
    # 将 ASCII 值转换为字符并打印
    c.append(chr(i))
w = [i for i in c]
for i in c:
    for j in c:
        w.append("{}{}".format(i, j))

X = w[:349]

obj = {}
for index, ite in enumerate(X, 1):
    obj[ite] = "c{}".format(index)

print(json.dumps(obj, ensure_ascii=False, indent=4))