C312312111111331312111133133313231333131133132231333133313331323221311222211   >>    C31231211111133131211113313331323133313113313223133313331333132322131122221   <<    C312312111111331312111133133313231333131133132231333133313331323221311222213   >>      C312312111111331312111133133313231333131133132231333133313331323221311222212   >>