D12121323331322331311132313132313233313233313331313231221313221   >>    D1212132333132233131113231313231323331323331333131323122131322   <<    D12121323331322331311132313132313233313233313331313231221313223   >>      D12121323331322331311132313132313233313233313331313231221313222   >>