#!/usr/local/bin/python2
import sys;L=[];S=lambda D:(0in D)and[L.append(D.index(0)),[(D.__setitem__(L[-1],i),S(D),D.__setitem__(L.pop(),0))for i in set(range(1,10))-set(D[L[-1]/9*9:L[-1]/9*9+9]+D[L[-1]%9:81:9]+[d for n in(0,1,2)for d in D[L[-1]/27*27+L[-1]%9/3*3+n*9:L[-1]/27*27+L[-1]%9/3*3+n*9+3]])]]or([sys.stdout.write('%d'%d+('\n'if i%9==8 else' '))for i,d in enumerate(D)],sys.exit());S([int(c)if c!='.'else 0for c in'69..421...5..1...7..1.8.......6..74.16.....23.75..3.......3.4..7...9..8...816..75'])