a-a a-i a-t aaa aaf aag aai aan aao aar aas aat af- afa aff afg afi afn afo afr afs aft ag- aga agf agg agi agn ago agr ags agt ai- aia aif aig aii ain aio air ais ait an- ana anf ang ani ann ano anr ans ant aoa aof aog aoi aon aoo aor aos aot ar- ara arf arg ari arn aro arr ars art as- asa asf asg asi asn aso asr ass ast at- ata atf atg ati atn ato atr ats att faa faf fag fai fan fao far fas fat ffa fff ffg ffi ffn ffo ffr ffs fft fga fgf fgg fgi fgn fgr fgs fgt fia fif fig fii fin fir fis fit fna fnf fng fni fnn fnr fns fnt foa fof fog foi fon foo for fos fot fra frf frg fri frn fro frr frs frt fsa fsf fsg fsi fsn fso fsr fss fst fta ftf ftg fti ftn fto ftr fts ftt gaa gaf gag gai gan gao gar gas gat gfa gff gfi gfo gfr gfs gft gga ggg ggi ggn ggo ggr ggs ggt gia gif gig gii gin gio gir gis git gna gnf gni gnn gno gnr gns gnt goa gof gog goi gon goo gor gos got gra grf grg gri grn gro grr grs grt gsa gsf gsg gsi gsn gso gsr gss gst gta gtf gtg gti gtn gto gtr gts gtt i-f ia- iaa iaf iag iai ian iao iar ias iat ifa iff ifg ifi ifn ifo ifr ifs ift iga igf igg igi ign igo igr igs igt iia iif iii iin iio iir iis iit in- ina inf ing ini inn ino inr ins int io- ioa iof iog ioi ion ioo ior ios iot ir- ira irf irg iri irn iro irr irs irt is- isa isf isg isi isn iso isr iss ist ita itf itg iti itn ito its itt n-i naa naf nag nai nan nao nar nas nat nfa nff nfi nfn nfo nfr nfs nft nga ngf ngg ngi ngn ngo ngs ngt nia nif nig nii nin nio nir nis nit nna nnf nng nni nnn nno nns nnt no- noa nof nog noi non noo nor nos not nra nrf nrg nri nrn nro nrr nrs nrt nsa nsf nsg nsi nsn nso nsr nss nst nta ntf ntg nti ntn nto ntr nts ntt o-i oaa oaf oag oai oan oao oar oas oat of- ofa off ofg ofi ofn ofo ofr ofs oft oga ogf ogg ogi ogn ogo ogs ogt oia oif oii oin oio oir ois oit on- ona onf ong oni onn ono onr ons ont oo- ooa oof oog ooi oon ooo oor oos oot or- ora orf org ori orn oro orr ors ort os- osa osf osg osi osn oso osr oss ost ot- ota otf otg oti otn oto otr ots ott ra- raa raf rag rai ran rao rar ras rat rfa rff rfg rfi rfn rfo rfr rfs rft rga rgf rgg rgi rgn rgo rgr rgs rgt ria rif rig rii rin rio rir ris rit rna rng rni rnn rno rnr rns rnt roa rof rog roi ron roo ror ros rot rra rrf rrg rri rrn rrr rrs rrt rsa rsf rsg rsi rsn rso rsr rss rst rta rtf rtg rti rtn rto rtr rts rtt saa saf sag sai san sao sar sas sat sfa sff sfg sfi sfn sfo sfr sfs sft sga sgf sgg sgi sgn sgo sgr sgs sgt sia sif sig sii sin sio sir sis sit sna snf sng sni snn sno snr sns snt soa sof sog soi son soo sor sos sot sr- sra srf srg sri srn sro srr srs srt ss- ssa ssf ssg ssi ssn sso ssr sss sst sta stf stg sti stn sto str sts stt taa taf tag tai tan tao tar tas tat tfa tff tfg tfi tfn tfo tfr tfs tft tga tgf tgg tgi tgn tgo tgr tgs tgt tia tif tig tii tin tio tir tis tit tna tnf tng tni tnn tno tnr tns tnt to- toa tof tog toi ton too tor tos tot tra trf trg tri trn tro trr trs trt tsa tsf tsg tsi tsn tso tsr tss tst tta ttf ttg tti ttn tto ttr tts ttt