E

# # args = [i[1] for i in input().split()]
f = open('input.txt')
# args = [i[1] for i in f.read().split()]
import sys
# args = [i[1] for i in sys.argv]
args = []
for i in sys.argv:
    for j in i:
        args.append(j)
a = []
ua = []
while(1):
#     b = input()
    b = f.read()
    if(len(b) == 0):
        break
    if('i' in args):
        b = b.lower()
    a.append(b)

ua.append([1,a[0]])

for i in range(1, len(a)):
    if(a[i] != ua[-1][1]):
        ua.append([1, a[i]])
    else:
        ua[-1][0] += 1
for i in ua:
    if(not (('d' in args) or ('u' in args)) or \
       ('d' in args) and not ('u' in args) and (i[0] > 1) or \
       ('u' in args) and not ('d' in args) and (i[0] == 1)):
        if('c' in args):
            print(i[0], end=' ')
        print(i[1])