-er ddd dde ddi ddq ddr de- ded dee dei deq der di- did die dii diq dir dqe drd dre dri drq drr ed- edd ede edi edr eed eee eer eid eie eii eir eqe eqq erd ere eri erq err i-d idd ide idi idq idr ie- ied iee iei ier iid iie iii iir iqd iqe ir- ird ire iri irq irr qdr qed qee qid qie qir qqq qre qri rdd rde rdi rdr re- red ree rei req rer rid rie rii riq rir rrd rri rrq rrr