import sys

s = sys.stdin.buffer.readline().strip().decode()
n = len(s) + 5
grid = [["#"] * n for _ in range(n)]
grid[0][0] = grid[-1][-1] = "."
for i, ch in enumerate(s, 1):
    if i % 2:
        base, r, c = i - 1, i + 1, i - 1
        for rr in range(base, base + 3):
            grid[rr][c] = "."
    else:
        base = i - 2
        r = c = i
        for cc in range(base, base + 3):
            grid[r][cc] = "."
    if ch == "x":
        continue
    if i % 2:
        for rr in range(r, n):
            grid[rr][c] = "."
        for cc in range(c, n):
            grid[-1][cc] = "."
    else:
        for cc in range(c, n):
            grid[r][cc] = "."
        for rr in range(r, n):
            grid[rr][-1] = "."
print(n)
print("\n".join(map("".join, grid)))