-al -ol -th a-a a-b a-c a-t aaa aab aac aah aak aal aao aat ab- aba abb abc abh abk abl abo abt ac- aca acb acc ach ack acl aco act aha ahb ahc ahh ahk ahl aho aht aka akb akc akh akk akl ako al- ala alb alc alh alk all alo alt aoa aob aoc aoh aok aol aoo aot at- ata atb atc ath atl ato att baa bab bac bah bak bal bao bat bba bbb bbc bbh bbk bbl bbo bbt bca bcb bcc bch bck bcl bco bct bha bhb bhc bhh bhk bhl bho bht bka bkb bkc bkk bkl bko bkt bla blb blc blh blk bll blo blt boa bob boc boh bok bol boo bot bta btb btc bth btk btl bto btt c-- caa cab cac cah cak cal cao cat cba cbb cbc cbh cbk cbl cbo cbt cca ccb ccc cch cck ccl cco cct ch- cha chb chc chh chk chl cho cht cka ckb ckc ckh cko ckt cl- cla clb clc clh clk cll clo clt co- coa cob coc coh cok col coo cot cta ctb ctc cth ctk ctl cto ctt haa hab hac hah hak hal hao hat hba hbb hbc hbh hbk hbl hbo hbt hca hcb hcc hch hck hcl hco hct hha hhb hhc hhh hhk hhl hho hht hka hkb hkh hkk hkl hko hkt hla hlb hlc hlh hll hlo hlt hoa hob hoc hoh hok hol hoo hot hta htb htc hth htk htl hto htt k-t ka- kaa kab kac kah kak kal kao kat kba kbb kbc kbh kbk kbl kbo kca kcb kcc kch kck kcl kct kha khh khk kho kkb kkc kkh kkk kkl kkt kl- kla klb klc klh klo klt koa kob koc koh kok kol koo kot kta ktb ktc kth ktk ktl kto ktt la- laa lab lac lah lak lal lao lat lba lbb lbc lbh lbk lbl lbo lbt lca lcb lcc lch lck lcl lco lct lha lhb lhc lhh lhk lho lht lka lkb lkh lkl lkt lla llb llc llk lll llo llt loa lob loc loh lok lol loo lot lta ltb ltc lth ltk ltl lto ltt oaa oab oac oah oak oal oao oat ob- oba obb obc obh obk obl obo obt oc- oca ocb occ och ock ocl oco oct oha ohc ohh ohl oho oht oka okb okc okk okl oko ola olb olc olk oll olo olt oo- ooa oob ooc ooh ook ool ooo oot ot- ota otb otc oth otk otl oto ott taa tab tac tah tak tal tao tat tba tbb tbc tbh tbk tbl tbo tbt tca tcb tcc tch tck tcl tco tct th- tha thb thc thh thk thl tho tht tka tkb tkc tkk tkl tko tkt tla tlc tlh tlk tll tlo tlt to- toa tob toc toh tok tol too tot tta ttb ttc tth ttk ttl tto ttt