import os
import sys


script = __file__
script_path = os.path.dirname(script)
script_file = os.path.basename(script)[0]
files = [f for f in os.listdir(script_path) if script_file in f and '.in' in f]
if '{}-large'.format(script_file) in str(files):
    size = 'large'
elif '{}-small'.format(script_file) in str(files):
    size = 'small'
elif '{}-test'.format(script_file) in str(files):
    size = 'test'
else:
    print('{}-test not found'.format(script_file))
    sys.exit()
latest = sorted(f for f in files if size in f)[-1][:-3]
f = '{}/{}'.format(script_path, latest)
i = open(f + '.in', 'r')
o = open(f + '.out', 'w')
print(f)
T = int(i.readline())

# https://code.google.com/codejam/contest/11254486/dashboard#s=p1
# Problem B. Close Match

for x in range(T):
    C, J = i.readline().rstrip().split()
    c, j = '', ''
    leading = 1
    N = len(C)
    for i in range(N):
        a, b = C[i], J[i]
        if i < N - 1:
            a1, b1 = C[i + 1], J[i + 1]
        if i < N - 1 and ('?' in a + b and '?' not in a1 + b1):
            if abs(int(a1) - int(b1)) > 5:
                c += [a, ['1', '0'][a1 > b1]][a == '?']
                j += [b, ['0', '1'][a1 > b1]][b == '?']
            else:
                c += [a, [b, '0'][b == '?']][a == '?']
                j += [b, [a, '0'][a == '?']][b == '?']
        else:
            if c == j:
                c += [a, [b, '0'][b == '?']][a == '?']
                j += [b, [a, '0'][a == '?']][b == '?']
            elif c > j:
                c += [a, '0'][a == '?']
                j += [b, '9'][b == '?']
            elif c < j:
                c += [a, '9'][a == '?']
                j += [b, '0'][b == '?']

    y = '{} {}'.format(c, j)
    print(C, J, c, j)
    o.write('{}Case #{}: {}'.format(['', '\n'][x > 0], x + 1, y))

i.close()
o.close()
