D12121212213231323132323323131323132332313232233132233132322121121   >>    D1212121221323132313232332313132313233231323223313223313232212112   <<    D12121212213231323132323323131323132332313232233132233132322121123   >>      D12121212213231323132323323131323132332313232233132233132322121122   >>