nrm nrn nro nrp nrr nrs nrt nsc nsd nse nsi nsl nsm nsn nso nsp nsr nss nst ntc ntd nte nti ntm ntn nto ntp ntr nts ntt o-i oc- occ ocd oci ocl ocm ocn oco ocp ocr ocs oct odc odd ode odi odl odm odn odo odp odr ods odt oec oed oee oei oel oem oen oeo oep oer oes oet oic oid oie oii oil oim oin oio oip oir ois oit olc old ole oli oll olm oln olo olp ols olt om- omc omd ome omi oml omm omn omo omp omr oms omt on- onc ond one oni onl onn ono onp onr ons ont oo- ooc ood ooi ool oom oon ooo oop oor oos oot op- opc opd ope opi opl opm opn opo opp opr ops opt or- orc ord ore ori orl orm orn oro orp orr ors ort os- osc osd ose osi osl osm osn oso osp osr oss ost ot- otc otd ote oti otl otm otn oto otp otr ots ott p-p pcc pcd pce pci pcl pcm pcn pco pcp pcr pcs pct pdc pdd pde pdi pdl pdm pdn pdo pdp pdr pds pdt pec ped pee pei pel pem pen peo pep per pes pet pic pid pie pii pil pim pin pio pip pir pis pit plc pld ple pli pll plm pln plo plp plr pls plt pmc pmd pme pmi pml pmm pmn pmo pmp pmr pms pmt pn- pnc pnd pne pni pnl pnm pnn pno pnp pnr pns pnt poc pod poe poi pol pom pon poo pop por pos pot ppc ppd ppe ppi ppl ppm ppn ppo ppp ppr pps ppt prc prd pre pri prl prm prn pro prp prr prs prt ps- psc psd pse psi psl psm psn pso psp psr pss pst pt- ptc ptd pte pti ptl ptm ptn pto ptp ptr pts ptt rcc rcd rce rci rcl rcm rcn rco rcp rcr rcs rct rdc rdd rde rdi rdl rdm rdn rdo rdp rdr rds rdt re- rec red ree rei rel rem ren reo rep rer res ret ric rid rie rii ril rim rin rio rip rir ris rit rlc rld rle rli rll rlm rln rlo rlp rlr rls rlt rmc rmd rme rmi rml rmm rmn rmo rmp rmr rms rmt rnc rnd rni rnm rnn rno rnp rnr rns rnt roc rod roe roi rol rom ron roo rop ror ros rot rpc rpd rpe rpi rpl rpm rpn rpo rpp rpr rps rpt rrc rrd rri rrl rrm rrn rrp rrr rrs rrt rsc rsd rse rsi rsl rsm rsn rso rsp rsr rss rst rtc rtd rte rti rtl rtm rtn rto rtp rtr rts rtt scc scd sce sci scl scm scn sco scp scr scs sct sdc sdd sde sdi sdl sdm sdn sdo sdp sdr sds sdt se- sec sed see sei sel sem sen seo sep ser ses set sic sid sie sii sil sim sin sio sip sir sis sit slc sld sle sli sll slm sln slo slp slr sls slt smc smd sme smi sml smm smn smo smp smr sms smt snc snd sne sni snl snm snn sno snp snr sns snt soc sod soe soi sol som son soo sop sor sos sot spc spd spe spi spl spm spn spo spp spr sps spt sr- src srd sre sri srl srm srn sro srp srr srs srt ss- ssc ssd sse ssi ssl ssm ssn sso ssp ssr sss sst stc std ste sti stl stm stn sto stp str sts stt tcc tcd tce tci tcl tcm tcn tco tcp tcr tcs tct tdc tdd tde tdi tdl tdm tdn tdo tdp tdr tds tdt te- tec ted tee tei tel tem ten teo tep ter tes tet tic tid tie tii til tim tin tio tip tir tis tit tlc tld tle tli tll tlm tln tlo tlp tlr tls tlt tmc tmd tme tmi tml tmm tmn tmo tmp tmr tms tmt tnc tnd tne tni tnl tnm tnn tno tnp tnr tns tnt to- toc tod toe toi tol tom ton too top tor tos tot tpc tpd tpe tpi tpl tpm tpn tpo tpp tpr tps tpt trc trd tre tri trl trm trn tro trp trr trs trt tsc tsd tse tsi tsl tsm tsn tso tsp tsr tss tst ttc ttd tte tti ttl ttm ttn tto ttp ttr tts ttt