a-a a-b a-c a-t aaa aab aac aad aae aaj aak aao aat ab- aba abb abc abd abe abj abk abo abt ac- aca acb acc acd ace acj ack aco act ad- ada adb adc add ade adj adk ado adt aea aeb aec aed aee aej aek aeo aet aja ajb ajc ajd aje ajj ajk ajo ajt aka akb akc akd ake akj akk ako aoa aob aoc aod aoe aoj aok aoo aot at- ata atb atc atd ate ato att baa bab bac bad bae baj bak bao bat bba bbb bbc bbd bbe bbk bbo bbt bca bcb bcc bcd bce bcj bck bco bct bda bdb bdc bdd bde bdj bdk bdo bdt be- bea beb bec bed bee bek beo bet bja bjc bjd bjj bjk bjt bka bkb bkc bke bkk bko bkt boa bob boc bod boe boj bok boo bot bta btb btc btd bte btk bto btt c-- c-j caa cab cac cad cae caj cak cao cat cba cbb cbc cbd cbe cbj cbk cbo cbt cca ccb ccc ccd cce ccj cck cco cct cda cdb cdc cdd cde cdj cdk cdo cdt ce- cea ceb cec ced cee cej cek ceo cet cja cjb cjc cjd cjk cka ckb ckc ckd cko ckt co- coa cob coc cod coe coj cok coo cot cta ctb ctc ctd cte ctk cto ctt daa dab dac dad dae daj dak dao dat dba dbb dbc dbd dbe dbk dbo dbt dca dcb dcc dcd dce dck dco dct dda ddb ddc ddd dde ddk ddo ddt de- dea deb dec ded dee dej dek deo det dj- dja djb djc djd dje djk djo djt dka dkb dkc dke dkk dko dkt doa dob doc dod doe doj dok doo dot dta dtb dtc dtd dte dtj dtk dto dtt eaa eab eac ead eae eaj eak eao eat eba ebb ebc ebd ebe ebj ebk ebo ebt ec- eca ecb ecc ecd ece ecj eck eco ect ed- eda edb edc edd ede edj edk edo edt eea eeb eec eed eee eek eeo eet eja ejc ejd ejo ejt eka ekb ekc ekd eke eko ekt eo- eoa eob eoc eod eoe eok eoo eot eta etb etc etd ete etj etk eto ett j-d jaa jab jac jad jae jaj jak jao jat jba jbc jbj jbk jbo jbt jca jcb jcc jcd jce jck jco jct jda jdb jdc jde jdo jdt jea jeb jec jed jee jej jek jeo jet jja jjb jjc jjj jjk jka jkb jkk jko jkt joa job joc jod joe joj jok joo jot jta jtb jtc jte jtk jtt k-t ka- kaa kab kac kad kae kaj kak kao kat kba kbb kbc kbd kbe kbk kbo kca kcb kcc kcd kce kck kct kda kdb kdc kde kdk kdo kdt ke- kea keb kec ked kee kek keo ket kjb kjc kje kkb kkc kke kkk kkt koa kob koc kod koe kok koo kot kta ktb ktc kte ktj ktk kto ktt oaa oab oac oad oae oaj oak oao oat ob- oba obb obc obd obe obj obk obo obt oc- oca ocb occ ocd ocj ock oco oct oda odb odc odd ode odo odt oea oeb oec oed oee oeo oet oja ojb ojc ojd oje ojo oka okb okc okd oke okj okk oko oo- ooa oob ooc ood ook ooo oot ot- ota otb otc otd ote otk oto ott taa tab tac tad tae taj tak tao tat tba tbb tbc tbd tbe tbj tbk tbo tbt tca tcb tcc tcd tce tcj tck tco tct tda tdb tdc tdd tde tdk tdo tdt te- tea teb tec ted tee tej tek teo tet tjc tjd tje tjo tka tkb tkc tke tkk tko tkt to- toa tob toc tod toe toj tok too tot tta ttb ttc ttd tte ttk tto ttt