C212212121212113313223313133313221323133313231323132313231311121   >>    C21221212121211331322331313331322132313331323132313231323131112   <<    C212212121212113313223313133313221323133313231323132313231311123   >>      C212212121212113313223313133313221323133313231323132313231311122   >>