D12121212213231323132323323131323132332313232233132233132322121   >>    D1212121221323132313232332313132313233231323223313223313232212   <<    D12121212213231323132323323131323132332313232233132233132322123   >>      D12121212213231323132323323131323132332313232233132233132322122   >>