npt nra nrc nre nrg nri nrl nrn nro nrp nrr nrs nrt nsa nsc nse nsg nsi nsl nsn nso nsp nsr nss nst nta ntc nte ntg nti ntn nto ntp ntr nts ntt o-i oaa oac oae oag oai oal oan oao oap oar oas oat oc- oca occ ocg oci ocl ocn oco ocp ocr ocs oct oea oec oee oeg oei oel oen oeo oep oer oes oet oga ogc oge ogg ogi ogl ogn ogo ogp ogs ogt oia oic oie oii oil oin oio oip oir ois oit ola olc ole olg oli oll oln olo olp ols olt on- ona onc one ong oni onl onn ono onp onr ons ont oo- ooa ooc oog ooi ool oon ooo oop oor oos oot op- opa opc ope opg opi opl opn opo opp opr ops opt or- ora orc ore org ori orl orn oro orp orr ors ort os- osa osc ose osg osi osl osn oso osp osr oss ost ot- ota otc ote otg oti otl otn oto otp otr ots ott p-p paa pac pae pag pai pal pan pao pap par pas pat pca pcc pce pcg pci pcl pcn pco pcp pcr pcs pct pea pec pee peg pei pel pen peo pep per pes pet pga pgc pge pgg pgi pgl pgn pgo pgp pgr pgs pgt pia pic pie pig pii pil pin pio pip pir pis pit pla plc ple plg pli pll pln plo plp plr pls plt pn- pna pnc pne png pni pnl pnn pno pnp pnr pns pnt poa poc poe pog poi pol pon poo pop por pos pot ppa ppc ppe ppg ppi ppl ppn ppo ppp ppr pps ppt pra prc pre prg pri prl prn pro prp prr prs prt ps- psa psc pse psg psi psl psn pso psp psr pss pst pt- pta ptc pte ptg pti ptl ptn pto ptp ptr pts ptt ra- raa rac rae rag rai ral ran rao rap rar ras rat rca rcc rce rcg rci rcl rcn rco rcp rcr rcs rct re- rea rec ree reg rei rel ren reo rep rer res ret rga rgc rge rgg rgi rgn rgo rgp rgr rgs rgt ria ric rie rig rii ril rin rio rip rir ris rit rla rlc rle rlg rli rll rln rlo rlp rlr rls rlt rna rnc rng rni rnn rno rnp rnr rns rnt roa roc roe rog roi rol ron roo rop ror ros rot rpa rpc rpe rpg rpi rpl rpn rpo rpp rpr rps rpt rra rrc rrg rri rrl rrn rrp rrr rrs rrt rsa rsc rse rsg rsi rsl rsn rso rsp rsr rss rst rta rtc rte rtg rti rtl rtn rto rtp rtr rts rtt saa sac sae sag sai sal san sao sap sar sas sat sca scc sce scg sci scl scn sco scp scr scs sct se- sea sec see seg sei sel sen seo sep ser ses set sga sgc sge sgg sgi sgl sgn sgo sgp sgr sgs sgt sia sic sie sig sii sil sin sio sip sir sis sit sla slc sle slg sli sll sln slo slp slr sls slt sna snc sne sng sni snl snn sno snp snr sns snt soa soc soe sog soi sol son soo sop sor sos sot spa spc spe spg spi spl spn spo spp spr sps spt sr- sra src sre srg sri srl srn sro srp srr srs srt ss- ssa ssc sse ssg ssi ssl ssn sso ssp ssr sss sst sta stc ste stg sti stl stn sto stp str sts stt taa tac tae tag tai tal tan tao tap tar tas tat tca tcc tce tcg tci tcl tcn tco tcp tcr tcs tct te- tea tec tee teg tei tel ten teo tep ter tes tet tga tgc tge tgg tgi tgl tgn tgo tgp tgr tgs tgt tia tic tie tig tii til tin tio tip tir tis tit tla tlc tle tlg tli tll tln tlo tlp tlr tls tlt tna tnc tne tng tni tnl tnn tno tnp tnr tns tnt to- toa toc toe tog toi tol ton too top tor tos tot tpa tpc tpe tpg tpi tpl tpn tpo tpp tpr tps tpt tra trc tre trg tri trl trn tro trp trr trs trt tsa tsc tse tsg tsi tsl tsn tso tsp tsr tss tst tta ttc tte ttg tti ttl ttn tto ttp ttr tts ttt