n = input()
while n != "":
    n = int(n)
    rows = []
    columns = [None] * n
    freq = {}
    for i in range(n):
        row = input().strip()
        rows.append(row)
        srow = ''.join(sorted(row))
        if srow in freq:
            freq[srow]+=1
        else:
            freq[srow] = 1
    for i in range(n):
        columns[i] = ''.join(rows[j][i] for j in range(n))
    best = ""
    bestv = 0
    for k, v in freq.items():
        if v > bestv:
            bestv = v
            best = k
    rid = 0
    cid = 0
    correct = ''
    for i in range(n):
        if ''.join(sorted(rows[i])) != best:
            rid = i + 1
            for c in best:
                if c not in rows[i]:
                    correct = c
    for i in range(n):
        if ''.join(sorted(columns[i])) != best:
            cid = i + 1
    print(rid, cid, correct)
    try:
        n = input()
    except:
        break