D13231123313133313133112323223313233313231322132313331323133313232233211321   >>    D1323112331313331313311232322331323331323132213231333132313331323223321132   <<    D13231123313133313133112323223313233313231322132313331323133313232233211323   >>      D13231123313133313133112323223313233313231322132313331323133313232233211322   >>