D231123313223313132313233313131323331313233313223313133112121121   >>    D23112331322331313231323331313132333131323331322331313311212112   <<    D231123313223313132313233313131323331313233313223313133112121123   >>      D231123313223313132313233313131323331313233313223313133112121122   >>