D13231123313133313133112323223313231323223313331313231323133313233313231123311   >>    D1323112331313331313311232322331323132322331333131323132313331323331323112331   <<    D13231123313133313133112323223313231323223313331313231323133313233313231123313   >>      D13231123313133313133112323223313231323223313331313231323133313233313231123312   >>