D23112313233313223313132322331323132313331313223313231323133112121   >>    D2311231323331322331313232233132313231333131322331323132313311212   <<    D23112313233313223313132322331323132313331313223313231323133112123   >>      D23112313233313223313132322331323132313331313223313231323133112122   >>