C2122121212121133132213231313231313231323223313231322331313233313233313111211   >>    C212212121212113313221323131323131323132322331323132233131323331323331311121   <<    C2122121212121133132213231313231313231323223313231322331313233313233313111213   >>      C2122121212121133132213231313231313231323223313231322331313233313233313111212   >>