D3312121211331313331313232233132322331323132233132313232112323131231   >>    D331212121133131333131323223313232233132313223313231323211232313123   <<    D3312121211331313331313232233132322331323132233132313232112323131233   >>      D3312121211331313331313232233132322331323132233132313232112323131232   >>