D12121323331322132313331322132313233313233313131122233132322121   >>    D1212132333132213231333132213231323331323331313112223313232212   <<    D12121323331322132313331322132313233313233313131122233132322123   >>      D12121323331322132313331322132313233313233313131122233132322122   >>