D13231123313133313133112323223313231323223313331313231333132333132313331211   >>    D1323112331313331313311232322331323132322331333131323133313233313231333121   <<    D13231123313133313133112323223313231323223313331313231333132333132313331213   >>      D13231123313133313133112323223313231323223313331313231333132333132313331212   >>