D13231123313133313133112323223313231323223313331122112323132323321   >>    D1323112331313331313311232322331323132322331333112211232313232332   <<    D13231123313133313133112323223313231323223313331122112323132323323   >>      D13231123313133313133112323223313231323223313331122112323132323322   >>