D13231123313133313133112323223313231323223313331313231323212111   >>    D1323112331313331313311232322331323132322331333131323132321211   <<    D13231123313133313133112323223313231323223313331313231323212113   >>      D13231123313133313133112323223313231323223313331313231323212112   >>