C123211131133132233131323132313233313233313132313133313231333132313222211   >>    C12321113113313223313132313231323331323331313231313331323133313231322221   <<    C123211131133132233131323132313233313233313132313133313231333132313222213   >>      C123211131133132233131323132313233313233313132313133313231333132313222212   >>