D33121212113313133313132322331323223313231322331323133313221221   >>    D3312121211331313331313232233132322331323132233132313331322122   <<    D33121212113313133313132322331323223313231322331323133313221223   >>      D33121212113313133313132322331323223313231322331323133313221222   >>