a-a a-b aaa aab aae aag aaj aak aan aao ab- aba abb abe abg abj abk abn abo aea aeb aee aeg aej aek aen aeo ag- aga agb age agg agj agk agn ago aja ajb aje ajj ajk ajn ajo aka akb ake akg akj akk akn ako an- ana anb ane ang anj ank ann ano aoa aob aoe aog aoj aok aon aoo baa bab bae bag baj bak ban bao bba bbb bbe bbg bbk bbn bbo be- bea beb bee beg bek ben beo bga bgb bge bgg bgk bgn bgo bja bjg bjj bjk bjn bka bkb bke bkg bkk bkn bko bna bnb bne bng bnj bnk bnn bno boa bob boe bog boj bok bon boo eaa eab eae eag eaj eak ean eao eba ebb ebe ebg ebj ebk ebn ebo eea eeb eee eeg eek een eeo ega egb ege egg egn ego eja ejo eka ekb eke ekg eko en- ena enb ene eng enk enn eno eo- eoa eob eoe eog eok eon eoo gaa gab gae gag gaj gak gan gao gba gbe gbg gbj gbk gbn gbo ge- gea geb gee geg gek gen geo gga ggb ggg ggj ggn ggo gja gje gjg gka gkb gkn gko gna gnb gne gnn gno goa gob goe gog gok gon goo jaa jab jae jag jaj jak jan jao jba jbg jbj jbk jbo jea jeb jee jeg jej jek jen jeo jga jgb jge jgn jgo jja jjb jjg jjj jjk jka jkb jkk jkn jko jna jne jng jnj jnn jno joa job joe jog joj jok jon joo ka- kaa kab kae kag kaj kak kan kao kba kbb kbe kbk kbn kbo ke- kea keb kee keg kek ken keo kga kgb kgo kjb kje kkb kke kkk kkn kn- kna kne kng knk knn kno koa kob koe kog kok kon koo naa nab nae nag naj nak nan nao nba nbb nbe nbg nbk nbn nbo ne- nea neb nee neg nej nek nen neo nga ngb nge ngg ngj ngk ngn ngo nja nje njk njn nka nke nkj nkk nkn nko nna nnb nne nng nnk nnn nno no- noa nob noe nog noj nok non noo oaa oab oae oag oaj oak oan oao ob- oba obb obe obg obj obk obn obo oea oeb oee oeg oen oeo oga oge ogg ogn ogo oja ojb oje ojo oka okb oke okg okj okk oko on- ona onb one ong onj onk onn ono oo- ooa oob oog ook oon ooo