nrl nrn nro nrp nrr nrs nrt nsa nsd nse nsg nsi nsl nsn nso nsp nsr nss nst nta ntd nte ntg nti ntn nto ntp ntr nts ntt o-i oaa oad oae oag oai oal oan oao oap oar oas oat oda odd ode odg odi odl odn odo odp odr ods odt oea oed oee oeg oei oel oen oeo oep oer oes oet oga ogd oge ogg ogi ogl ogn ogo ogp ogs ogt oia oid oie oii oil oin oio oip oir ois oit ola old ole olg oli oll oln olo olp ols olt on- ona ond one ong oni onl onn ono onp onr ons ont oo- ooa ood oog ooi ool oon ooo oop oor oos oot op- opa opd ope opg opi opl opn opo opp opr ops opt or- ora ord ore org ori orl orn oro orp orr ors ort os- osa osd ose osg osi osl osn oso osp osr oss ost ot- ota otd ote otg oti otl otn oto otp otr ots ott p-p paa pad pae pag pai pal pan pao pap par pas pat pda pdd pde pdg pdi pdl pdn pdo pdp pdr pds pdt pea ped pee peg pei pel pen peo pep per pes pet pga pgd pge pgg pgi pgl pgn pgo pgp pgr pgs pgt pia pid pie pig pii pil pin pio pip pir pis pit pla pld ple plg pli pll pln plo plp plr pls plt pn- pna pnd pne png pni pnl pnn pno pnp pnr pns pnt poa pod poe pog poi pol pon poo pop por pos pot ppa ppd ppe ppg ppi ppl ppn ppo ppp ppr pps ppt pra prd pre prg pri prl prn pro prp prr prs prt ps- psa psd pse psg psi psl psn pso psp psr pss pst pt- pta ptd pte ptg pti ptl ptn pto ptp ptr pts ptt ra- raa rad rae rag rai ral ran rao rap rar ras rat rda rdd rde rdg rdi rdl rdn rdo rdp rdr rds rdt re- rea red ree reg rei rel ren reo rep rer res ret rga rgd rge rgg rgi rgn rgo rgp rgr rgs rgt ria rid rie rig rii ril rin rio rip rir ris rit rla rld rle rlg rli rll rln rlo rlp rlr rls rlt rna rnd rng rni rnn rno rnp rnr rns rnt roa rod roe rog roi rol ron roo rop ror ros rot rpa rpd rpe rpg rpi rpl rpn rpo rpp rpr rps rpt rra rrd rrg rri rrl rrn rrp rrr rrs rrt rsa rsd rse rsg rsi rsl rsn rso rsp rsr rss rst rta rtd rte rtg rti rtl rtn rto rtp rtr rts rtt saa sad sae sag sai sal san sao sap sar sas sat sda sdd sde sdg sdi sdl sdn sdo sdp sdr sds sdt se- sea sed see seg sei sel sen seo sep ser ses set sga sgd sge sgg sgi sgl sgn sgo sgp sgr sgs sgt sia sid sie sig sii sil sin sio sip sir sis sit sla sld sle slg sli sll sln slo slp slr sls slt sna snd sne sng sni snl snn sno snp snr sns snt soa sod soe sog soi sol son soo sop sor sos sot spa spd spe spg spi spl spn spo spp spr sps spt sr- sra srd sre srg sri srl srn sro srp srr srs srt ss- ssa ssd sse ssg ssi ssl ssn sso ssp ssr sss sst sta std ste stg sti stl stn sto stp str sts stt taa tad tae tag tai tal tan tao tap tar tas tat tda tdd tde tdg tdi tdl tdn tdo tdp tdr tds tdt te- tea ted tee teg tei tel ten teo tep ter tes tet tga tge tgg tgi tgl tgn tgo tgp tgr tgs tgt tia tid tie tig tii til tin tio tip tir tis tit tla tld tle tlg tli tll tln tlo tlp tlr tls tlt tna tnd tne tng tni tnl tnn tno tnp tnr tns tnt to- toa tod toe tog toi tol ton too top tor tos tot tpa tpd tpe tpg tpi tpl tpn tpo tpp tpr tps tpt tra trd tre trg tri trl trn tro trp trr trs trt tsa tsd tse tsg tsi tsl tsn tso tsp tsr tss tst tta ttd tte ttg tti ttl ttn tto ttp ttr tts ttt