C212212121212113313221323131323132313132322331323132233131231211111   >>    C21221212121211331322132313132313231313232233132313223313123121111   <<    C212212121212113313221323131323132313132322331323132233131231211113   >>      C212212121212113313221323131323132313132322331323132233131231211112   >>