D13231123313133313133112323223313231323223313331313231323132232211   >>    D1323112331313331313311232322331323132322331333131323132313223221   <<    D13231123313133313133112323223313231323223313331313231323132232213   >>      D13231123313133313133112323223313231323223313331313231323132232212   >>