-al -th a-a a-b a-c a-t aaa aab aac aae aah aak aal aat ab- aba abb abc abe abh abk abl abt ac- aca acb acc ace ach ack acl act aea aeb aec aee aeh aek ael aet aha ahb ahc ahe ahh ahk ahl aht aka akb akc ake akh akk akl al- ala alb alc ale alh alk all alt at- ata atb atc ate ath atl att baa bab bac bae bah bak bal bat bba bbb bbc bbe bbh bbk bbl bbt bca bcb bcc bce bch bck bcl bct be- bea beb bec bee beh bek bel bet bha bhb bhc bhe bhh bhk bhl bht bka bkb bkc bke bkk bkl bkt bla blb blc ble blh blk bll blt bta btb btc bte bth btk btl btt c-- caa cab cac cae cah cak cal cat cba cbb cbc cbe cbh cbk cbl cbt cca ccb ccc cce cch cck ccl cct ce- cea ceb cec cee ceh cek cel cet ch- cha chb chc che chh chk chl cht cka ckb ckc ckh ckt cl- cla clb clc cle clh clk cll clt cta ctb ctc cte cth ctk ctl ctt eaa eab eac eae eah eak eal eat eba ebb ebc ebe ebh ebk ebl ebt ec- eca ecb ecc ece ech eck ecl ect eea eeb eec eee eek eel eet eha ehb ehc ehe ehh ehl eht eka ekb ekc eke ekh ekl ekt ela elb elc ele elh elk ell elt eta etb etc ete eth etk etl ett haa hab hac hae hah hak hal hat hba hbb hbc hbe hbh hbk hbl hbt hca hcb hcc hce hch hck hcl hct he- hea heb hec hee heh hek hel het hha hhb hhc hhe hhh hhk hhl hht hka hkb hkh hkk hkl hkt hla hlb hlc hle hlh hll hlt hta htb htc hte hth htk htl htt k-t ka- kaa kab kac kae kah kak kal kat kba kbb kbc kbe kbh kbk kbl kca kcb kcc kce kch kck kcl kct ke- kea keb kec kee keh kek kel ket kha khe khh khk kkb kkc kke kkh kkk kkl kkt kl- kla klb klc klh klt kta ktb ktc kte kth ktk ktl ktt la- laa lab lac lae lah lak lal lat lba lbb lbc lbe lbh lbk lbl lbt lca lcb lcc lce lch lck lcl lct lea leb lec lee leh lek lel let lha lhb lhc lhh lhk lht lka lkb lkh lkl lkt lla llb llc lle llk lll llt lta ltb ltc lte lth ltk ltl ltt taa tab tac tae tah tak tal tat tba tbb tbc tbe tbh tbk tbl tbt tca tcb tcc tce tch tck tcl tct te- tea teb tec tee teh tek tel tet th- tha thb thc the thh thk thl tht tka tkb tkc tke tkk tkl tkt tla tlc tle tlh tlk tll tlt tta ttb ttc tte tth ttk ttl ttt