D13231123313133313133112323223313231323223313331313231333132322312331   >>    D1323112331313331313311232322331323132322331333131323133313232231233   <<    D13231123313133313133112323223313231323223313331313231333132322312333   >>      D13231123313133313133112323223313231323223313331313231333132322312332   >>