C1111233131211111211113313231333132333132322331323132313231322211   >>    C111123313121111121111331323133313233313232233132313231323132221   <<    C1111233131211111211113313231333132333132322331323132313231322213   >>      C1111233131211111211113313231333132333132322331323132313231322212   >>