Solution:
Count each identity characters, if character x 's counter is n, add string n + " " + x to its result string. After iterate, the input string, print the result string.
def printx(n, x):
return str(n) + " " + x
m = int(input())
for i in range(m):
sr = input()
rs = ""
x = sr[0]
i = 1
n = 1
while i < len(sr):
if sr[i] == x:
n += 1
else:
rs += printx(n, x)+" "
n = 1
x = sr[i]
i += 1
rs += printx(n,x)
print(rs)