D12121323331313331312313231323223313232211233132321123231333221   >>    D1212132333131333131231323132322331323221123313232112323133322   <<    D12121323331313331312313231323223313232211233132321123231333223   >>      D12121323331313331312313231323223313232211233132321123231333222   >>