D13231123313133313133112323223313231323223313331313231333132233132313232121   >>    D1323112331313331313311232322331323132322331333131323133313223313231323212   <<    D13231123313133313133112323223313231323223313331313231333132233132313232123   >>      D13231123313133313133112323223313231323223313331313231333132233132313232122   >>