D3312121211331313331313232233132322331323132233132313331323133313211   >>    D331212121133131333131323223313232233132313223313231333132313331321   <<    D3312121211331313331313232233132322331323132233132313331323133313213   >>      D3312121211331313331313232233132322331323132233132313331323133313212   >>