C212212121212113313221323131323132313132322331323132233132332313231322311   >>    C21221212121211331322132313132313231313232233132313223313233231323132231   <<    C212212121212113313221323131323132313132322331323132233132332313231322313   >>      C212212121212113313221323131323132313132322331323132233132332313231322312   >>