a-a a-t aaa aaf aan aao aap aar aas aat af- afa aff afn afo afp afr afs aft an- ana anf ann ano anp anr ans ant aoa aof aon aoo aop aor aos aot ap- apa apf apn apo app apr aps apt ar- ara arf arn aro arp arr ars art as- asa asf asn aso asp asr ass ast at- ata atf atn ato atp atr ats att faa faf fan fao fap far fas fat ffa fff ffn ffo ffp ffr ffs fft fna fnf fnn fnp fnr fns fnt foa fof fon foo fop for fos fot fpa fpn fpo fpp fpr fps fpt fra frf frn fro frp frr frs frt fsa fsf fsn fso fsp fsr fss fst fta ftf ftn fto ftp ftr fts ftt naa naf nan nao nap nar nas nat nfa nff nfn nfo nfp nfr nfs nft nna nnf nnn nno nnp nns nnt no- noa nof non noo nop nor nos not npa npf npn npo npp npr nps npt nra nrf nrn nro nrp nrr nrs nrt nsa nsf nsn nso nsp nsr nss nst nta ntf ntn nto ntp ntr nts ntt oaa oaf oan oao oap oar oas oat of- ofa off ofn ofo ofp ofr ofs oft on- ona onf onn ono onp onr ons ont oo- ooa oof oon ooo oop oor oos oot op- opa opf opn opo opp opr ops opt or- ora orf orn oro orp orr ors ort os- osa osf osn oso osp osr oss ost ot- ota otf otn oto otp otr ots ott p-p paa paf pan pao pap par pas pat pfa pff pfn pfo pfp pfr pfs pft pn- pna pnf pnn pno pnp pnr pns pnt poa pof pon poo pop por pos pot ppa ppf ppn ppo ppp ppr pps ppt pra prf prn pro prp prr prs prt ps- psa psf psn pso psp psr pss pst pt- pta ptf ptn pto ptp ptr pts ptt ra- raa raf ran rao rap rar ras rat rfa rff rfn rfo rfp rfr rfs rft rna rnn rno rnp rnr rns rnt roa rof ron roo rop ror ros rot rpa rpf rpn rpo rpp rpr rps rpt rra rrf rrn rrp rrr rrs rrt rsa rsf rsn rso rsp rsr rss rst rta rtf rtn rto rtp rtr rts rtt saa saf san sao sap sar sas sat sfa sff sfn sfo sfp sfr sfs sft sna snf snn sno snp snr sns snt soa sof son soo sop sor sos sot spa spf spn spo spp spr sps spt sr- sra srf srn sro srp srr srs srt ss- ssa ssf ssn sso ssp ssr sss sst sta stf stn sto stp str sts stt taa taf tan tao tap tar tas tat tfa tff tfn tfo tfp tfr tfs tft tna tnf tnn tno tnp tnr tns tnt to- toa tof ton too top tor tos tot tpa tpf tpn tpo tpp tpr tps tpt tra trf trn tro trp trr trs trt tsa tsf tsn tso tsp tsr tss tst tta ttf ttn tto ttp ttr tts ttt