a-a aaa aae aaf aag aak aan aao aea aee aef aeg aek aen aeo af- afa afe aff afg afk afn afo ag- aga age agf agg agk agn ago aka ake akg akk akn ako an- ana ane anf ang ank ann ano aoa aoe aof aog aok aon aoo eaa eae eaf eag eak ean eao eea eee eef eeg eek een eeo ef- efa efe eff efg efo ega ege egf egg egn ego eka eke ekf ekg eko en- ena ene enf eng enk enn eno eo- eoa eoe eof eog eok eon eoo faa fae faf fag fak fan fao fea fee fef feg fek fen feo ffa ffe fff ffg ffk ffn ffo fga fge fgf fgg fgn fka fkf fkg fkk fna fne fnf fng fnk fnn foa foe fof fog fok fon foo gaa gae gaf gag gak gan gao ge- gea gee gef geg gek gen geo gfa gfe gff gfk gfo gga ggg ggn ggo gka gkn gko gna gne gnf gnn gno goa goe gof gog gok gon goo ka- kaa kae kaf kag kak kan kao ke- kea kee kef keg kek ken keo kfa kff kfg kfo kga kgf kgo kke kkk kkn kn- kna kne knf kng knk knn kno koa koe kof kog kok kon koo naa nae naf nag nak nan nao ne- nea nee nef neg nek nen neo nfa nfe nff nfk nfn nfo nga nge ngf ngg ngk ngn ngo nka nke nkf nkk nkn nko nna nne nnf nng nnk nnn nno no- noa noe nof nog nok non noo oaa oae oaf oag oak oan oao oea oee oef oeg oen oeo of- ofa ofe off ofg ofn ofo oga oge ogf ogg ogn ogo oka oke okg okk oko on- ona one onf ong onk onn ono oo- ooa oof oog ook oon ooo