npt nra nrc nre nrf nri nrl nrn nro nrp nrr nrs nrt nsa nsc nse nsf nsi nsl nsn nso nsp nsr nss nst nta ntc nte ntf nti ntn nto ntp ntr nts ntt o-i oaa oac oae oaf oai oal oan oao oap oar oas oat oc- oca occ ocf oci ocl ocn oco ocp ocr ocs oct oea oec oee oef oei oel oen oeo oep oer oes oet of- ofa ofc ofe off ofi ofl ofn ofo ofp ofr ofs oft oia oic oie oif oii oil oin oio oip oir ois oit ola olc ole olf oli oll oln olo olp ols olt on- ona onc one onf oni onl onn ono onp onr ons ont oo- ooa ooc oof ooi ool oon ooo oop oor oos oot op- opa opc ope opf opi opl opn opo opp opr ops opt or- ora orc ore orf ori orl orn oro orp orr ors ort os- osa osc ose osf osi osl osn oso osp osr oss ost ot- ota otc ote otf oti otl otn oto otp otr ots ott p-p paa pac pae paf pai pal pan pao pap par pas pat pca pcc pce pcf pci pcl pcn pco pcp pcr pcs pct pea pec pee pef pei pel pen peo pep per pes pet pfa pfc pfe pff pfi pfl pfn pfo pfp pfr pfs pft pia pic pie pif pii pil pin pio pip pir pis pit pla plc ple plf pli pll pln plo plp plr pls plt pn- pna pnc pne pnf pni pnl pnn pno pnp pnr pns pnt poa poc poe pof poi pol pon poo pop por pos pot ppa ppc ppe ppf ppi ppl ppn ppo ppp ppr pps ppt pra prc pre prf pri prl prn pro prp prr prs prt ps- psa psc pse psf psi psl psn pso psp psr pss pst pt- pta ptc pte ptf pti ptl ptn pto ptp ptr pts ptt ra- raa rac rae raf rai ral ran rao rap rar ras rat rca rcc rce rcf rci rcl rcn rco rcp rcr rcs rct re- rea rec ree ref rei rel ren reo rep rer res ret rfa rfc rfe rff rfi rfl rfn rfo rfp rfr rfs rft ria ric rie rif rii ril rin rio rip rir ris rit rla rlc rle rlf rli rll rln rlo rlp rlr rls rlt rna rnc rni rnn rno rnp rnr rns rnt roa roc roe rof roi rol ron roo rop ror ros rot rpa rpc rpe rpf rpi rpl rpn rpo rpp rpr rps rpt rra rrc rrf rri rrl rrn rrp rrr rrs rrt rsa rsc rse rsf rsi rsl rsn rso rsp rsr rss rst rta rtc rte rtf rti rtl rtn rto rtp rtr rts rtt saa sac sae saf sai sal san sao sap sar sas sat sca scc sce scf sci scl scn sco scp scr scs sct se- sea sec see sef sei sel sen seo sep ser ses set sfa sfc sfe sff sfi sfl sfn sfo sfp sfr sfs sft sia sic sie sif sii sil sin sio sip sir sis sit sla slc sle slf sli sll sln slo slp slr sls slt sna snc sne snf sni snl snn sno snp snr sns snt soa soc soe sof soi sol son soo sop sor sos sot spa spc spe spf spi spl spn spo spp spr sps spt sr- sra src sre srf sri srl srn sro srp srr srs srt ss- ssa ssc sse ssf ssi ssl ssn sso ssp ssr sss sst sta stc ste stf sti stl stn sto stp str sts stt taa tac tae taf tai tal tan tao tap tar tas tat tca tcc tce tcf tci tcl tcn tco tcp tcr tcs tct te- tea tec tee tef tei tel ten teo tep ter tes tet tfa tfc tfe tff tfi tfl tfn tfo tfp tfr tfs tft tia tic tie tif tii til tin tio tip tir tis tit tla tlc tle tlf tli tll tln tlo tlp tlr tls tlt tna tnc tne tnf tni tnl tnn tno tnp tnr tns tnt to- toa toc toe tof toi tol ton too top tor tos tot tpa tpc tpe tpf tpi tpl tpn tpo tpp tpr tps tpt tra trc tre trf tri trl trn tro trp trr trs trt tsa tsc tse tsf tsi tsl tsn tso tsp tsr tss tst tta ttc tte ttf tti ttl ttn tto ttp ttr tts ttt