02. Letters Combinations

# 02. Letters Combinations


first = ord(input())
second = ord(input())
third =  ord(input())
all_combination = 0
i = 0
for i in range(first , second + 1):
    if i == third:
        continue
        i += first
        all_combination +=1
    k = 0
    for k in range(first , second + 1):
        if k == third:
            continue
            k += first
            all_combination += 1
        j = 0
        for j in range(first , second + 1):
            if j == third:
                continue
                j += first
                all_combination += 1

            print(f"{chr(i)} {chr(k)} {chr(j)} ")