-er ddd dde ddi ddn ddo ddp ddr dds ddt de- ded dee dei den deo dep der des det di- did die dii din dio dip dir dis dit dnd dne dni dnn dno dnp dnr dns dnt dod doe doi don doo dop dor dos dot dpd dpe dpi dpn dpo dpp dpr dps dpt drd dre dri drn dro drp drr drs drt dsd dse dsi dsn dso dsp dsr dss dst dtd dte dti dtn dto dtp dtr dts dtt ed- edd ede edi edn edo edp edr eds edt eed eee een eeo eep eer ees eet eid eie eii ein eio eip eir eis eit en- end ene eni enn eno enp enr ens ent eo- eod eoe eoi eon eoo eop eor eos eot ep- epd epe epi epn epo epp epr eps ept erd ere eri ern ero erp err ers ert es- esd ese esi esn eso esp esr ess est etd ete eti etn eto etp etr ets ett i-d idd ide idi idn ido idp idr ids idt ie- ied iee iei ien iep ier ies iet iid iie iii iin iio iip iir iis iit in- ind ine ini inn ino inp inr ins int io- iod ioe ioi ion ioo iop ior ios iot ipd ipe ipi ipn ipo ipp ipr ips ipt ir- ird ire iri irn iro irp irr irs irt is- isd ise isi isn iso isp isr iss ist itd ite iti itn ito itp its itt n-i ndd nde ndi ndn ndo ndp ndr nds ndt ne- ned nee nei nen neo nep ner nes net nid nie nii nin nio nip nir nis nit nne nni nnn nno nnp nns nnt no- nod noe noi non noo nop nor nos not npd npe npi npn npo npp npr nps npt nrd nre nri nrn nro nrp nrr nrs nrt nsd nse nsi nsn nso nsp nsr nss nst ntd nte nti ntn nto ntp ntr nts ntt o-i odd ode odi odn odo odp odr ods odt oed oee oei oen oeo oep oer oes oet oid oie oii oin oio oip oir ois oit on- ond one oni onn ono onp onr ons ont oo- ood ooi oon ooo oop oor oos oot op- opd ope opi opn opo opp opr ops opt or- ord ore ori orn oro orp orr ors ort os- osd ose osi osn oso osp osr oss ost ot- otd ote oti otn oto otp otr ots ott p-p pdd pde pdi pdn pdo pdp pdr pds pdt ped pee pei pen peo pep per pes pet pid pie pii pin pio pip pir pis pit pn- pnd pne pni pnn pno pnp pnr pns pnt pod poe poi pon poo pop por pos pot ppd ppe ppi ppn ppo ppp ppr pps ppt prd pre pri prn pro prp prr prs prt ps- psd pse psi psn pso psp psr pss pst pt- ptd pte pti ptn pto ptp ptr pts ptt rdd rde rdi rdn rdo rdp rdr rds rdt re- red ree rei ren reo rep rer res ret rid rie rii rin rio rip rir ris rit rnd rni rnn rno rnp rnr rns rnt rod roe roi ron roo rop ror ros rot rpd rpe rpi rpn rpo rpp rpr rps rpt rrd rri rrn rrp rrr rrs rrt rsd rse rsi rsn rso rsp rsr rss rst rtd rte rti rtn rto rtp rtr rts rtt sdd sde sdi sdn sdo sdp sdr sds sdt se- sed see sei sen seo sep ser ses set sid sie sii sin sio sip sir sis sit snd sne sni snn sno snp snr sns snt sod soe soi son soo sop sor sos sot spd spe spi spn spo spp spr sps spt sr- srd sre sri srn sro srp srr srs srt ss- ssd sse ssi ssn sso ssp ssr sss sst std ste sti stn sto stp str sts stt tdd tde tdi tdn tdo tdp tdr tds tdt te- ted tee tei ten teo tep ter tes tet tid tie tii tin tio tip tir tis tit tnd tne tni tnn tno tnp tnr tns tnt to- tod toe toi ton too top tor tos tot tpd tpe tpi tpn tpo tpp tpr tps tpt trd tre tri trn tro trp trr trs trt tsd tse tsi tsn tso tsp tsr tss tst ttd tte tti ttn tto ttp ttr tts ttt