input = 'hello'
letters = {'a':0,'b':0,'c':0,'d':0,'e':0,'f':0,'g':0,'h':0,'i':0,'j':0,'k':0,'l':0,'m':0,'n':0,'o':0,'p':0,'q':0,'r':0,'s':0,'t':0,'u':0,'v':0,'w':0,'x':0,'y':0,'z':0}

output_list = []

for i in input:
    for j in letters.keys():
        if i == j:
            letters[j] += 1
previous_letter = ' '
for k in range(0, 3):
    greatest = 0
    largest_letter = ' '
    for key in letters:
        if letters[key] > greatest:
            greatest = letters[key]
            largest_letter = key
    print(largest_letter + ' ' + str(greatest))
    del letters[largest_letter]