a-a a-b a-c a-t aaa aab aac aad aae aag aak aat ab- aba abb abc abd abe abg abk abt ac- aca acb acc acd ace acg ack act ad- ada adb adc add ade adg adk adt aea aeb aec aed aee aeg aek aet ag- aga agb agc agd age agg agk agt aka akb akc akd ake akg akk at- ata atb atc atd ate atg att baa bab bac bad bae bag bak bat bba bbb bbc bbd bbe bbg bbk bbt bca bcb bcc bcd bce bcg bck bct bda bdb bdc bdd bde bdg bdk bdt be- bea beb bec bed bee beg bek bet bga bgb bgc bgd bge bgg bgk bgt bka bkb bkc bke bkg bkk bkt bta btb btc btd bte btg btk btt c-- caa cab cac cad cae cag cak cat cba cbb cbc cbd cbe cbg cbk cbt cca ccb ccc ccd cce ccg cck cct cda cdb cdc cdd cde cdg cdk cdt ce- cea ceb cec ced cee ceg cek cet cga cgb cgc cgd cge cgg cgt cka ckb ckc ckd ckt cta ctb ctc ctd cte ctg ctk ctt daa dab dac dad dae dag dak dat dba dbb dbc dbd dbe dbg dbk dbt dca dcb dcc dcd dce dcg dck dct dda ddb ddc ddd dde ddg ddk ddt de- dea deb dec ded dee deg dek det dga dgc dgd dge dgg dgk dgt dka dkb dkc dke dkg dkk dkt dta dtb dtc dtd dte dtg dtk dtt eaa eab eac ead eae eag eak eat eba ebb ebc ebd ebe ebg ebk ebt ec- eca ecb ecc ecd ece ecg eck ect ed- eda edb edc edd ede edg edk edt eea eeb eec eed eee eeg eek eet ega egb egc egd ege egg egt eka ekb ekc ekd eke ekg ekt eta etb etc etd ete etg etk ett g-d gaa gab gac gad gae gag gak gat gba gbc gbd gbe gbg gbk gbt gca gcb gcc gcd gce gcg gck gct gda gdb gdc gdd gde gdk gdt ge- gea geb gec ged gee geg gek get gga ggb ggc ggd ggg ggt gka gkb gkd gkt gta gtb gtc gtd gte gtg gtk gtt k-t ka- kaa kab kac kad kae kag kak kat kba kbb kbc kbd kbe kbk kca kcb kcc kcd kce kcg kck kct kda kdb kdc kde kdg kdk kdt ke- kea keb kec ked kee keg kek ket kga kgb kgc kgd kkb kkc kke kkk kkt kta ktb ktc kte ktg ktk ktt taa tab tac tad tae tag tak tat tba tbb tbc tbd tbe tbg tbk tbt tca tcb tcc tcd tce tcg tck tct tda tdb tdc tdd tde tdg tdk tdt te- tea teb tec ted tee teg tek tet tga tgb tgc tge tgg tgk tgt tka tkb tkc tke tkg tkk tkt tta ttb ttc ttd tte ttg ttk ttt