a-a a-b a-t aaa aab aaj aak aao aas aat aay ab- aba abb abj abk abo abs abt aby aja ajb ajj ajk ajo ajs ajt ajy aka akb akj akk ako aks aoa aob aoj aok aoo aos aot as- asa asb asj ask aso ass ast asy at- ata atb ato ats att ay- aya ayk ayo ays ayt baa bab baj bak bao bas bat bay bba bbb bbk bbo bbs bbt bby bja bjj bjk bjs bjt bka bkb bkk bko bks bkt boa bob boj bok boo bos bot boy bsa bsb bsj bsk bso bss bst bsy bta btb btk bto bts btt bty by- bya byj byk byo bys byt jaa jab jaj jak jao jas jat jay jba jbj jbk jbo jbs jbt jja jjb jjj jjk jjs jjy jka jkb jkk jko jks jkt joa job joj jok joo jos jot joy jsa jsb jsj jsk jso jss jst jsy jta jtb jtk jts jtt jty jyj jys k-t ka- kaa kab kaj kak kao kas kat kay kba kbb kbk kbo kbs kjb kjs kkb kkk kks kkt kky koa kob kok koo kos kot koy ksa ksb ksk kso kss kst kta ktb ktj ktk kto kts ktt kya kyo kys kyt oaa oab oaj oak oao oas oat ob- oba obb obj obk obo obs obt oby oja ojb ojo ojs ojy oka okb okj okk oko oks oo- ooa oob ook ooo oos oot os- osa osb osj osk oso oss ost ot- ota otb otk oto ots ott oya oyo oys saa sab saj sak sao sas sat say sba sbb sbj sbk sbo sbs sbt sby sja sjb sjj sjk sjs sjt sk- ska skb skj skk sko sks skt sky soa sob soj sok soo sos sot soy ss- ssa ssb ssj ssk sso sss sst sta stb stj stk sto sts stt sty sy- sya syb syk sys syt taa tab taj tak tao tas tat tay tba tbb tbj tbk tbo tbs tbt tjo tjs tka tkb tkk tko tks tkt tky to- toa tob toj tok too tos tot toy tsa tsb tsj tsk tso tss tst tsy tta ttb ttk tto tts ttt tty tya tyo tys tyt yaa yab yak yao yas yat yay ybs yby yka ykk yob yoj yok yoo yos yot yoy ysa ysb ysj ysk yso yss yst ysy yta ytk yto yts ytt yyb yys yyt yyy