D23112331322331313231323223313133112323223313221323132313231323121   >>    D2311233132233131323132322331313311232322331322132313231323132312   <<    D23112331322331313231323223313133112323223313221323132313231323123   >>      D23112331322331313231323223313133112323223313221323132313231323122   >>