nrn nro nrp nrr nrs nrt nsa nsb nse nsg nsi nsl nsn nso nsp nsr nss nst nta ntb nte ntg nti ntn nto ntp ntr nts ntt o-i oaa oab oae oag oai oal oan oao oap oar oas oat ob- oba obb obe obg obi obl obn obo obp obr obs obt oea oeb oee oeg oei oel oen oeo oep oer oes oet oga oge ogg ogi ogl ogn ogo ogp ogs ogt oia oib oie oii oil oin oio oip oir ois oit ola olb ole olg oli oll oln olo olp ols olt on- ona onb one ong oni onl onn ono onp onr ons ont oo- ooa oob oog ooi ool oon ooo oop oor oos oot op- opa opb ope opg opi opl opn opo opp opr ops opt or- ora orb ore org ori orl orn oro orp orr ors ort os- osa osb ose osg osi osl osn oso osp osr oss ost ot- ota otb ote otg oti otl otn oto otp otr ots ott p-p paa pab pae pag pai pal pan pao pap par pas pat pba pbb pbe pbg pbi pbl pbn pbo pbp pbr pbs pbt pea peb pee peg pei pel pen peo pep per pes pet pga pgb pge pgg pgi pgl pgn pgo pgp pgr pgs pgt pia pib pie pig pii pil pin pio pip pir pis pit pla plb ple plg pli pll pln plo plp plr pls plt pn- pna pnb pne png pni pnl pnn pno pnp pnr pns pnt poa pob poe pog poi pol pon poo pop por pos pot ppa ppb ppe ppg ppi ppl ppn ppo ppp ppr pps ppt pra prb pre prg pri prl prn pro prp prr prs prt ps- psa psb pse psg psi psl psn pso psp psr pss pst pt- pta ptb pte ptg pti ptl ptn pto ptp ptr pts ptt ra- raa rab rae rag rai ral ran rao rap rar ras rat rba rbb rbe rbg rbi rbl rbn rbo rbp rbr rbs rbt re- rea reb ree reg rei rel ren reo rep rer res ret rga rgb rge rgg rgi rgn rgo rgp rgr rgs rgt ria rib rie rig rii ril rin rio rip rir ris rit rla rle rlg rli rll rln rlo rlp rlr rls rlt rna rnb rng rni rnn rno rnp rnr rns rnt roa rob roe rog roi rol ron roo rop ror ros rot rpa rpb rpe rpg rpi rpl rpn rpo rpp rpr rps rpt rra rrb rrg rri rrl rrn rrp rrr rrs rrt rsa rsb rse rsg rsi rsl rsn rso rsp rsr rss rst rta rtb rte rtg rti rtl rtn rto rtp rtr rts rtt saa sab sae sag sai sal san sao sap sar sas sat sba sbb sbe sbg sbi sbl sbn sbo sbp sbr sbs sbt se- sea seb see seg sei sel sen seo sep ser ses set sga sgb sge sgg sgi sgl sgn sgo sgp sgr sgs sgt sia sib sie sig sii sil sin sio sip sir sis sit sla slb sle slg sli sll sln slo slp slr sls slt sna snb sne sng sni snl snn sno snp snr sns snt soa sob soe sog soi sol son soo sop sor sos sot spa spb spe spg spi spl spn spo spp spr sps spt sr- sra srb sre srg sri srl srn sro srp srr srs srt ss- ssa ssb sse ssg ssi ssl ssn sso ssp ssr sss sst sta stb ste stg sti stl stn sto stp str sts stt taa tab tae tag tai tal tan tao tap tar tas tat tba tbb tbe tbg tbi tbl tbn tbo tbp tbr tbs tbt te- tea teb tee teg tei tel ten teo tep ter tes tet tga tgb tge tgg tgi tgl tgn tgo tgp tgr tgs tgt tia tib tie tig tii til tin tio tip tir tis tit tla tle tlg tli tll tln tlo tlp tlr tls tlt tna tnb tne tng tni tnl tnn tno tnp tnr tns tnt to- toa tob toe tog toi tol ton too top tor tos tot tpa tpb tpe tpg tpi tpl tpn tpo tpp tpr tps tpt tra trb tre trg tri trl trn tro trp trr trs trt tsa tsb tse tsg tsi tsl tsn tso tsp tsr tss tst tta ttb tte ttg tti ttl ttn tto ttp ttr tts ttt