nri nrn nro nrp nrr nrs nrt nsa nsc nsd nse nsh nsi nsn nso nsp nsr nss nst nta ntc ntd nte nth nti ntn nto ntp ntr nts ntt o-i oaa oac oad oae oah oai oan oao oap oar oas oat oc- oca occ ocd och oci ocn oco ocp ocr ocs oct oda odc odd ode odh odi odn odo odp odr ods odt oea oec oed oee oeh oei oen oeo oep oer oes oet oha ohc ohd ohe ohh ohi ohn oho ohp ohr ohs oht oia oic oid oie oii oin oio oip oir ois oit on- ona onc ond one onh oni onn ono onp onr ons ont oo- ooa ooc ood ooh ooi oon ooo oop oor oos oot op- opa opc opd ope oph opi opn opo opp opr ops opt or- ora orc ord ore orh ori orn oro orp orr ors ort os- osa osc osd ose osh osi osn oso osp osr oss ost ot- ota otc otd ote oth oti otn oto otp otr ots ott p-p paa pac pad pae pah pai pan pao pap par pas pat pca pcc pcd pce pch pci pcn pco pcp pcr pcs pct pda pdc pdd pde pdh pdi pdn pdo pdp pdr pds pdt pea pec ped pee peh pei pen peo pep per pes pet pha phc phd phe phi phn pho php phr phs pht pia pic pid pie pih pii pin pio pip pir pis pit pn- pna pnc pnd pne pnh pni pnn pno pnp pnr pns pnt poa poc pod poe poh poi pon poo pop por pos pot ppa ppc ppd ppe pph ppi ppn ppo ppp ppr pps ppt pra prc prd pre prh pri prn pro prp prr prs prt ps- psa psc psd pse psh psi psn pso psp psr pss pst pt- pta ptc ptd pte pth pti ptn pto ptp ptr pts ptt ra- raa rac rad rae rah rai ran rao rap rar ras rat rca rcc rcd rce rch rci rcn rco rcp rcr rcs rct rda rdc rdd rde rdh rdi rdn rdo rdp rdr rds rdt re- rea rec red ree reh rei ren reo rep rer res ret rh- rha rhc rhd rhe rhh rhi rhn rho rhp rhr rhs rht ria ric rid rie rih rii rin rio rip rir ris rit rna rnc rnd rnh rni rnn rno rnp rnr rns rnt roa roc rod roe roh roi ron roo rop ror ros rot rpa rpc rpd rpe rph rpi rpn rpo rpp rpr rps rpt rra rrc rrd rrh rri rrn rrp rrr rrs rrt rsa rsc rsd rse rsh rsi rsn rso rsp rsr rss rst rta rtc rtd rte rti rtn rto rtp rtr rts rtt saa sac sad sae sah sai san sao sap sar sas sat sca scc scd sce sch sci scn sco scp scr scs sct sda sdc sdd sde sdh sdi sdn sdo sdp sdr sds sdt se- sea sec sed see seh sei sen seo sep ser ses set sh- sha shc shd she shh shi shn sho shp shr shs sht sia sic sid sie sih sii sin sio sip sir sis sit sna snc snd sne sni snn sno snp snr sns snt soa soc sod soe soh soi son soo sop sor sos sot spa spc spd spe sph spi spn spo spp spr sps spt sr- sra src srd sre srh sri srn sro srp srr srs srt ss- ssa ssc ssd sse ssh ssi ssn sso ssp ssr sss sst sta stc std ste sth sti stn sto stp str sts stt taa tac tad tae tah tai tan tao tap tar tas tat tca tcc tcd tce tch tci tcn tco tcp tcr tcs tct tda tdc tdd tde tdh tdi tdn tdo tdp tdr tds tdt te- tea tec ted tee teh tei ten teo tep ter tes tet th- tha thc thd the thh thi thn tho thp thr ths tht tia tic tid tie tih tii tin tio tip tir tis tit tna tnc tnd tne tnh tni tnn tno tnp tnr tns tnt to- toa toc tod toe toh toi ton too top tor tos tot tpa tpc tpd tpe tph tpi tpn tpo tpp tpr tps tpt tra trc trd tre trh tri trn tro trp trr trs trt tsa tsc tsd tse tsh tsi tsn tso tsp tsr tss tst tta ttc ttd tte tth tti ttn tto ttp ttr tts ttt