a-a a-t aaa aaf aag aak aan aao aar aat af- afa aff afg afk afn afo afr aft ag- aga agf agg agk agn ago agr agt aka akg akk akn ako akr an- ana anf ang ank ann ano anr ant aoa aof aog aok aon aoo aor aot ar- ara arf arg ark arn aro arr art at- ata atf atg atn ato atr att faa faf fag fak fan fao far fat ffa fff ffg ffk ffn ffo ffr fft fga fgf fgg fgn fgr fgt fka fkf fkg fkk fkt fna fnf fng fnk fnn fnr fnt foa fof fog fok fon foo for fot fra frf frg frk frn fro frr frt fta ftf ftg ftk ftn fto ftr ftt gaa gaf gag gak gan gao gar gat gfa gff gfk gfo gfr gft gga ggg ggn ggo ggr ggt gka gkn gko gkt gna gnf gnn gno gnr gnt goa gof gog gok gon goo gor got gra grf grg grk grn gro grr grt gta gtf gtg gtk gtn gto gtr gtt k-t ka- kaa kaf kag kak kan kao kar kat kfa kff kfg kfo kga kgf kgo kkk kkn kkr kkt kn- kna knf kng knk knn kno knr knt koa kof kog kok kon koo kor kot kra krf krg krk krn kro krr krt kta ktf ktg ktk ktn kto ktr ktt naa naf nag nak nan nao nar nat nfa nff nfk nfn nfo nfr nft nga ngf ngg ngk ngn ngo ngt nka nkf nkk nkn nko nkr nkt nna nnf nng nnk nnn nno nnt no- noa nof nog nok non noo nor not nra nrf nrg nrk nrn nro nrr nrt nta ntf ntg ntk ntn nto ntr ntt oaa oaf oag oak oan oao oar oat of- ofa off ofg ofn ofo ofr oft oga ogf ogg ogn ogo ogt oka okg okk oko okr on- ona onf ong onk onn ono onr ont oo- ooa oof oog ook oon ooo oor oot or- ora orf org ork orn oro orr ort ot- ota otf otg otk otn oto otr ott ra- raa raf rag rak ran rao rar rat rfa rff rfg rfk rfn rfo rfr rft rga rgf rgg rgk rgn rgo rgr rgt rkf rkg rkk rko rkt rna rng rnn rno rnr rnt roa rof rog rok ron roo ror rot rra rrf rrg rrk rrn rrr rrt rta rtf rtg rtk rtn rto rtr rtt taa taf tag tak tan tao tar tat tfa tff tfg tfk tfn tfo tfr tft tga tgf tgg tgk tgn tgo tgr tgt tka tkg tkk tko tkr tkt tna tnf tng tnk tnn tno tnr tnt to- toa tof tog tok ton too tor tot tra trf trg trk trn tro trr trt tta ttf ttg ttk ttn tto ttr ttt