C2122121212132322331313132313232233132322331322223313232212111121   >>    C212212121213232233131313231323223313232233132222331323221211112   <<    C2122121212132322331313132313232233132322331322223313232212111123   >>      C2122121212132322331313132313232233132322331322223313232212111122   >>