D3312121211331313331313232233132322331323132233132313331333231121   >>    D331212121133131333131323223313232233132313223313231333133323112   <<    D3312121211331313331313232233132322331323132233132313331333231123   >>      D3312121211331313331313232233132322331323132233132313331333231122   >>