while 1:
	r = raw_input()

	print"".join((p!=c)*("\x1b[4%dm" % "xrgybmcw_ ".find(c)) +"  " + "\x1b[49m"*(n=="\n") for p, c, n in zip(" "+r, r, r[1:]+"\n"))

	#sdfgsdfgebsfewwvfefvewfv ewrvsdfwf ewffvwq fqef qef qf qwef wafe  e f efewf ef .. ... .............