D11222112113313133313232211233132333131122112322331313331323133313232231221   >>    D1122211211331313331323221123313233313112211232233131333132313331323223122   <<    D11222112113313133313232211233132333131122112322331313331323133313232231223   >>      D11222112113313133313232211233132333131122112322331313331323133313232231222   >>