""" day 8 part 2 """

import fileinput
import collections

positions = collections.defaultdict(list)
width = 0
height = 0

for y,row in enumerate(fileinput.input()):
    width = max(width, len(row.strip()))
    height = y + 1
    for x,cell in enumerate(row.strip()):
        if cell != '.':
            positions[cell].append((x,y))


antinodes = set()

def add_antinodes(x, y, dx, dy):
    x += dx
    y += dy
    while 0 <= x < width and 0 <= y < height:
        antinodes.add((x, y))
        x += dx
        y += dy

for frequency, positions in positions.items():
    for x1, y1 in positions:
        for x2, y2 in positions:
            dx = x2 - x1
            dy = y2 - y1
            if dx or dy:
                print(frequency)
                add_antinodes(x1, y1, dx, dy)

print(antinodes)
print(len(antinodes))