a-a a-i a-t aaa aaf aag aai aak aao aar aat af- afa aff afg afi afk afo afr aft ag- aga agf agg agi agk ago agr agt ai- aia aif aig aii aik aio air ait aka akg aki akk ako akr aoa aof aog aoi aok aoo aor aot ar- ara arf arg ari ark aro arr art at- ata atf atg ati ato atr att faa faf fag fai fak fao far fat ffa fff ffg ffi ffk ffo ffr fft fga fgf fgg fgi fgr fgt fia fif fig fii fik fir fit fka fkf fkg fki fkk fkt foa fof fog foi fok foo for fot fra frf frg fri frk fro frr frt fta ftf ftg fti ftk fto ftr ftt gaa gaf gag gai gak gao gar gat gfa gff gfi gfk gfo gfr gft gga ggg ggi ggo ggr ggt gia gif gig gii gik gio gir git gka gko gkt goa gof gog goi gok goo gor got gra grf grg gri grk gro grr grt gta gtf gtg gti gtk gto gtr gtt i-f ia- iaa iaf iag iai iao iar iat ifa iff ifg ifi ifo ifr ift iga igf igg igi igk igo igr igt iia iif iii iio iir iit ika ikf iki ikk iko ikr ikt io- ioa iof iog ioi ioo ior iot ir- ira irf irg iri irk iro irr irt ita itf itg iti itk ito itt k-t ka- kaa kaf kag kai kak kao kar kat kfa kff kfg kfi kfo kga kgf kgi kgo kia kif kig kii kik kio kir kit kki kkk kkr kkt koa kof kog koi kok koo kor kot kra krf krg kri krk kro krr krt kta ktf ktg ktk kto ktr ktt o-i oaa oaf oag oai oak oao oar oat of- ofa off ofg ofi ofo ofr oft oga ogf ogg ogi ogo ogt oia oif oii oik oio oir oit oka okg oki okk oko okr oo- ooa oof oog ooi ook ooo oor oot or- ora orf org ori ork oro orr ort ot- ota otf otg oti otk oto otr ott ra- raa raf rag rai rak rao rar rat rfa rff rfg rfi rfk rfo rfr rft rga rgf rgg rgi rgk rgo rgr rgt ria rif rig rii rik rio rir rit rkf rkg rkk rko rkt roa rof rog roi rok roo ror rot rra rrf rrg rri rrk rrr rrt rta rtf rtg rti rtk rto rtr rtt taa taf tag tai tak tao tar tat tfa tff tfg tfi tfk tfo tfr tft tga tgf tgg tgi tgk tgo tgr tgt tia tif tig tii tik tio tir tit tka tkg tkk tko tkr tkt to- toa tof tog toi tok too tor tot tra trf trg tri trk tro trr trt tta ttf ttg tti ttk tto ttr ttt