-er ddd dde ddl ddq ddr dds ddu de- ded dee del deq der des deu dl- dld dle dll dlr dls dlu dqe dqs drd dre drl drq drr drs dru dsd dse dsl dsq dsr dss dsu dud due dul dur dus ed- edd ede edl edr eds edu eed eee eel eer ees eld ele ell elr els elu eqe eqq eqs equ erd ere erl erq err ers eru es- esd ese esl esq esr ess esu eu- eud eue eul eur eus ldd lde ldl ldr lds ldu led lee lel leq ler les leu lld lle lll llq llr lls llu lqr lrd lrr lrs lru lsd lse lsl lsq lsr lss lsu lud lue lul lur lus luu qdr qds qed qee qls qqq qqu qre qrl qrs qru qsd qsl qsr qu- qud que qul qur qus rdd rde rdl rdr rds rdu re- red ree rel req rer res reu rld rle rll rlr rls rlu rqs rrd rrl rrq rrr rrs rru rsd rse rsl rsq rsr rss rsu rud rue rur rus ruu sdd sde sdl sdq sdr sds sdu se- sed see sel seq ser ses seu sld sle sll slq slr sls slu sqd sql sqq sqr sqs sr- srd sre srl srq srr srs ss- ssd sse ssl ssq ssr sss ssu sud sue sul suq sur sus suu udd ude udl udr uds udu ued uee uel uer ues uld ule ull ulr uls ulu ur- urd ure url urr urs uru usd use usl usr uss usu uue uur uus uuu