-al -ol a-a a-b a-c a-t aaa aab aac aak aal aam aao aat ab- aba abb abc abk abl abm abo abt ac- aca acb acc ack acl acm aco act aka akb akc akk akl akm ako al- ala alb alc alk all alm alo alt ama amb amc amk aml amm amo amt aoa aob aoc aok aol aom aoo aot at- ata atb atc atl atm ato att baa bab bac bak bal bam bao bat bba bbb bbc bbk bbl bbm bbo bbt bca bcb bcc bck bcl bcm bco bct bka bkb bkc bkk bkl bkm bko bkt bla blb blc blk bll blm blo blt bma bmb bmc bmk bml bmm bmo bmt boa bob boc bok bol bom boo bot bta btb btc btk btl btm bto btt c-- caa cab cac cak cal cam cao cat cba cbb cbc cbk cbl cbm cbo cbt cca ccb ccc cck ccl ccm cco cct cka ckb ckc ckm cko ckt cl- cla clb clc clk cll clm clo clt cma cmb cmc cmk cml cmm cmo cmt co- coa cob coc cok col com coo cot cta ctb ctc ctk ctl ctm cto ctt k-t ka- kaa kab kac kak kal kam kao kat kba kbb kbc kbk kbl kbm kbo kca kcb kcc kck kcl kcm kct kkb kkc kkk kkl kkm kkt kl- kla klb klc klm klo klt kma kmb kmc kmk kml kmm kmo kmt koa kob koc kok kol kom koo kot kta ktb ktc ktk ktl ktm kto ktt la- laa lab lac lak lal lam lao lat lba lbb lbc lbk lbl lbm lbo lbt lca lcb lcc lck lcl lcm lco lct lka lkb lkl lkt lla llb llc llk lll llm llo llt lma lmb lmc lmk lml lmm lmo lmt loa lob loc lok lol lom loo lot lta ltb ltc ltk ltl ltm lto ltt m-o maa mab mac mak mal mam mao mat mba mbb mbc mbk mbl mbm mbo mbt mc- mca mcb mcc mck mcl mcm mco mct mka mkb mkc mkk mkl mkm mko mkt mla mlb mlc mlk mll mlm mlo mlt mma mmb mmc mmk mml mmm mmo mmt moa mob moc mok mol mom moo mot mta mtb mtc mtk mtl mtm mto mtt oaa oab oac oak oal oam oao oat ob- oba obb obc obk obl obm obo obt oc- oca ocb occ ock ocl ocm oco oct oka okb okc okk okl oko ola olb olc olk oll olm olo olt om- oma omb omc oml omm omo omt oo- ooa oob ooc ook ool oom ooo oot ot- ota otb otc otk otl otm oto ott taa tab tac tak tal tam tao tat tba tbb tbc tbk tbl tbm tbo tbt tca tcb tcc tck tcl tcm tco tct tka tkb tkc tkk tkl tkm tko tkt tla tlc tlk tll tlm tlo tlt tma tmb tmc tmk tml tmm tmo tmt to- toa tob toc tok tol tom too tot tta ttb ttc ttk ttl ttm tto ttt