char_count= {}

for char in s:
    if char in char_count:
        char_count[char] += 1
    else:
        char_count[char] = 1

char_count = sorted(char_count.items(), key=lambda item: item[0])
char_count = sorted(char_count, key=lambda item: item[1], reverse=True)
        
for char in char_count[0:3]:
    print(char[0], char[1])