C212212121212113313132322331313331331122123231323132313132322131   >>    C21221212121211331313232233131333133112212323132313231313232213   <<    C212212121212113313132322331313331331122123231323132313132322133   >>      C212212121212113313132322331313331331122123231323132313132322132   >>