a-a a-t aaa aaf aan aao aar aas aat af- afa aff afn afo afr afs aft an- ana anf ann ano anr ans ant aoa aof aon aoo aor aos aot ar- ara arf arn aro arr ars art as- asa asf asn aso asr ass ast at- ata atf atn ato atr ats att faa faf fan fao far fas fat ffa fff ffn ffo ffr ffs fft fna fnf fnn fnr fns fnt foa fof fon foo for fos fot fra frf frn fro frr frs frt fsa fsf fsn fso fsr fss fst fta ftf ftn fto ftr fts ftt naa naf nan nao nar nas nat nfa nff nfn nfo nfr nfs nft nna nnf nnn nno nns nnt no- noa nof non noo nor nos not nra nrf nrn nro nrr nrs nrt nsa nsf nsn nso nsr nss nst nta ntf ntn nto ntr nts ntt oaa oaf oan oao oar oas oat of- ofa off ofn ofo ofr ofs oft on- ona onf onn ono onr ons ont oo- ooa oof oon ooo oor oos oot or- ora orf orn oro orr ors ort os- osa osf osn oso osr oss ost ot- ota otf otn oto otr ots ott ra- raa raf ran rao rar ras rat rfa rff rfn rfo rfr rfs rft rna rnn rno rnr rns rnt roa rof ron roo ror ros rot rra rrf rrn rrr rrs rrt rsa rsf rsn rso rsr rss rst rta rtf rtn rto rtr rts rtt saa saf san sao sar sas sat sfa sff sfn sfo sfr sfs sft sna snf snn sno snr sns snt soa sof son soo sor sos sot sr- sra srf srn sro srr srs srt ss- ssa ssf ssn sso ssr sss sst sta stf stn sto str sts stt taa taf tan tao tar tas tat tfa tff tfn tfo tfr tfs tft tna tnf tnn tno tnr tns tnt to- toa tof ton too tor tos tot tra trf trn tro trr trs trt tsa tsf tsn tso tsr tss tst tta ttf ttn tto ttr tts ttt