D3312121211331313331313232233132322331323132233132313231232313221   >>    D331212121133131333131323223313232233132313223313231323123231322   <<    D3312121211331313331313232233132322331323132233132313231232313223   >>      D3312121211331313331313232233132322331323132233132313231232313222   >>