nrs nrt nsa nsc nse nsg nsh nsi nsn nso nsp nsr nss nst nta ntc nte ntg nth nti ntn nto ntp ntr nts ntt o-i oaa oac oae oag oah oai oan oao oap oar oas oat oc- oca occ ocg och oci ocn oco ocp ocr ocs oct oea oec oee oeg oeh oei oen oeo oep oer oes oet oga ogc oge ogg ogh ogi ogn ogo ogp ogs ogt oha ohc ohe ohg ohh ohi ohn oho ohp ohr ohs oht oia oic oie oii oin oio oip oir ois oit on- ona onc one ong onh oni onn ono onp onr ons ont oo- ooa ooc oog ooh ooi oon ooo oop oor oos oot op- opa opc ope opg oph opi opn opo opp opr ops opt or- ora orc ore org orh ori orn oro orp orr ors ort os- osa osc ose osg osh osi osn oso osp osr oss ost ot- ota otc ote otg oth oti otn oto otp otr ots ott p-p paa pac pae pag pah pai pan pao pap par pas pat pca pcc pce pcg pch pci pcn pco pcp pcr pcs pct pea pec pee peg peh pei pen peo pep per pes pet pga pgc pge pgg pgh pgi pgn pgo pgp pgr pgs pgt pha phc phe phg phi phn pho php phr phs pht pia pic pie pig pih pii pin pio pip pir pis pit pn- pna pnc pne png pnh pni pnn pno pnp pnr pns pnt poa poc poe pog poh poi pon poo pop por pos pot ppa ppc ppe ppg pph ppi ppn ppo ppp ppr pps ppt pra prc pre prg prh pri prn pro prp prr prs prt ps- psa psc pse psg psh psi psn pso psp psr pss pst pt- pta ptc pte ptg pth pti ptn pto ptp ptr pts ptt ra- raa rac rae rag rah rai ran rao rap rar ras rat rca rcc rce rcg rch rci rcn rco rcp rcr rcs rct re- rea rec ree reg reh rei ren reo rep rer res ret rga rgc rge rgg rgh rgi rgn rgo rgp rgr rgs rgt rh- rha rhc rhe rhg rhh rhi rhn rho rhp rhr rhs rht ria ric rie rig rih rii rin rio rip rir ris rit rna rnc rng rnh rni rnn rno rnp rnr rns rnt roa roc roe rog roh roi ron roo rop ror ros rot rpa rpc rpe rpg rph rpi rpn rpo rpp rpr rps rpt rra rrc rrg rrh rri rrn rrp rrr rrs rrt rsa rsc rse rsg rsh rsi rsn rso rsp rsr rss rst rta rtc rte rtg rti rtn rto rtp rtr rts rtt saa sac sae sag sah sai san sao sap sar sas sat sca scc sce scg sch sci scn sco scp scr scs sct se- sea sec see seg seh sei sen seo sep ser ses set sga sgc sge sgg sgh sgi sgn sgo sgp sgr sgs sgt sh- sha shc she shg shh shi shn sho shp shr shs sht sia sic sie sig sih sii sin sio sip sir sis sit sna snc sne sng sni snn sno snp snr sns snt soa soc soe sog soh soi son soo sop sor sos sot spa spc spe spg sph spi spn spo spp spr sps spt sr- sra src sre srg srh sri srn sro srp srr srs srt ss- ssa ssc sse ssg ssh ssi ssn sso ssp ssr sss sst sta stc ste stg sth sti stn sto stp str sts stt taa tac tae tag tah tai tan tao tap tar tas tat tca tcc tce tcg tch tci tcn tco tcp tcr tcs tct te- tea tec tee teg teh tei ten teo tep ter tes tet tga tgc tge tgg tgh tgi tgn tgo tgp tgr tgs tgt th- tha thc the thg thh thi thn tho thp thr ths tht tia tic tie tig tih tii tin tio tip tir tis tit tna tnc tne tng tnh tni tnn tno tnp tnr tns tnt to- toa toc toe tog toh toi ton too top tor tos tot tpa tpc tpe tpg tph tpi tpn tpo tpp tpr tps tpt tra trc tre trg trh tri trn tro trp trr trs trt tsa tsc tse tsg tsh tsi tsn tso tsp tsr tss tst tta ttc tte ttg tth tti ttn tto ttp ttr tts ttt