D21221323131123313221323133313231121323132322331323132321123221211   >>    D2122132313112331322132313331323112132313232233132313232112322121   <<    D21221323131123313221323133313231121323132322331323132321123221213   >>      D21221323131123313221323133313231121323132322331323132321123221212   >>