D11222112113313133313232211233132333131122112322331313331313231121   >>    D1122211211331313331323221123313233313112211232233131333131323112   <<    D11222112113313133313232211233132333131122112322331313331313231123   >>      D11222112113313133313232211233132333131122112322331313331313231122   >>