from sys import stdin, stdout

def to_constantine(x: int)-> list[str]:
    bin_buffer = bin(x)[3:]
    rows: list[str] = []
    idx = 0

    for char in bin_buffer:
        row = ["."] * 61 # 30 padding | 30 mid
        row[idx + 30] = "#"
        rows.append("".join(row))
        if char == "0":
            idx += 1
        else:
            idx -=1

    row = ["."] * 61 # 30 padding | 30 mid
    row[idx + 30] = "#"
    rows.append("".join(row))

    indexes = [row.index("#") for row in rows]
    min_occur = min(indexes)
    max_occur = max(indexes)

    return [row[min_occur:max_occur + 1] for row in rows]


def from_constantine(rows: list[str]) -> int:
    bin_buffer = ""
    rows = rows[::-1]
    for i in range(0, len(rows) - 1):
        if rows[i+1].index("#") < rows[i].index("#"):
            bin_buffer += "0"
        else:
            bin_buffer += "1"
    bin_buffer = "1" + bin_buffer[::-1]
    return int(bin_buffer, 2)

def main() -> None:
    count_1 = int(stdin.readline())
    rows_1 = [stdin.readline() for _ in range(count_1)]
    count_2 = int(stdin.readline())
    rows_2 = [stdin.readline() for _ in range(count_2)]

    num = from_constantine(rows_1) + from_constantine(rows_2)
    result = to_constantine(num)
    stdout.write(f"{len(result)}\n{'\n'.join(result)}\n")

if __name__ == "__main__":
    main()