-al -ol a-a a-b a-c a-t aaa aab aac aak aal aam aao aar aas aat ab- aba abb abc abk abl abm abo abr abs abt ac- aca acb acc ack acl acm aco acr acs act aka akb akc akk akl akm ako akr aks al- ala alb alc alk all alm alo alr als alt ama amb amc amk aml amm amo amr ams amt aoa aob aoc aok aol aom aoo aor aos aot ar- ara arb arc ark arl arm aro arr ars art as- asa asb asc ask asl asm aso asr ass ast at- ata atb atc atl atm ato atr ats att baa bab bac bak bal bam bao bar bas bat bba bbb bbc bbk bbl bbm bbo bbr bbs bbt bca bcb bcc bck bcl bcm bco bcr bcs bct bka bkb bkc bkk bkl bkm bko bkr bks bkt bla blb blc blk bll blm blo blr bls blt bma bmb bmc bmk bml bmm bmo bmr bms bmt boa bob boc bok bol bom boo bor bos bot bra brb brk brl brm bro brr brs brt bsa bsb bsc bsk bsl bsm bso bsr bss bst bta btb btc btk btl btm bto btr bts btt c-- caa cab cac cak cal cam cao car cas cat cba cbb cbc cbk cbl cbm cbo cbr cbs cbt cca ccb ccc cck ccl ccm cco ccr ccs cct cka ckb ckc ckm cko cks ckt cl- cla clb clc clk cll clm clo clr cls clt cma cmb cmc cmk cml cmm cmo cmr cms cmt co- coa cob coc cok col com coo cor cos cot cra crb crc crk crl crm cro crr crs crt csa csb csc csk csl csm cso csr css cst cta ctb ctc ctk ctl ctm cto ctr cts ctt k-t ka- kaa kab kac kak kal kam kao kar kas kat kba kbb kbc kbk kbl kbm kbo kbr kbs kca kcb kcc kck kcl kcm kcr kcs kct kkb kkc kkk kkl kkm kkr kks kkt kl- kla klb klc klm klo klr kls klt kma kmb kmc kmk kml kmm kmo kms kmt koa kob koc kok kol kom koo kor kos kot kra krc krk krl kro krr krs krt ksa ksb ksc ksk ksl ksm kso ksr kss kst kta ktb ktc ktk ktl ktm kto ktr kts ktt la- laa lab lac lak lal lam lao lar las lat lba lbb lbc lbk lbl lbm lbo lbr lbs lbt lca lcb lcc lck lcl lcm lco lcr lcs lct lka lkb lkl lkr lks lkt lla llb llc llk lll llm llo llr lls llt lma lmb lmc lmk lml lmm lmo lmr lms lmt loa lob loc lok lol lom loo lor los lot lra lrb lrc lrk lrm lro lrr lrs lrt lsa lsb lsc lsk lsl lsm lso lsr lss lst lta ltb ltc ltk ltl ltm lto ltr lts ltt m-o m-r maa mab mac mak mal mam mao mar mas mat mba mbb mbc mbk mbl mbm mbo mbr mbs mbt mc- mca mcb mcc mck mcl mcm mco mcr mcs mct mka mkb mkc mkk mkl mkm mko mkr mks mkt mla mlb mlc mlk mll mlm mlo mlr mls mlt mma mmb mmc mmk mml mmm mmo mmr mms mmt moa mob moc mok mol mom moo mor mos mot mra mrb mrc mrk mrl mrm mro mrr mrs mrt msa msb msc msk msl msm mso msr mss mst mta mtb mtc mtk mtl mtm mto mtr mts mtt oaa oab oac oak oal oam oao oar oas oat ob- oba obb obc obk obl obm obo obr obs obt oc- oca ocb occ ock ocl ocm oco ocr ocs oct oka okb okc okk okl oko okr oks ola olb olc olk oll olm olo ols olt om- oma omb omc oml omm omo omr oms omt oo- ooa oob ooc ook ool oom ooo oor oos oot or- ora orb orc ork orl orm oro orr ors ort os- osa osb osc osk osl osm oso osr oss ost ot- ota otb otc otk otl otm oto otr ots ott ra- raa rab rac rak ral ram rao rar ras rat rba rbb rbc rbk rbl rbm rbo rbr rbs rbt rca rcb rcc rcl rcm rco rcr rcs rct rkb rkc rkk rkm rko rks rkt rla rlc rll rlm rlo rlr rls rlt rma rmb rmc rml rmm rmo rmr rms rmt roa rob roc rok rol rom roo ror ros rot rra rrb rrc rrk rrl rrm rrr rrs rrt rsa rsb rsc rsk rsl rsm rso rsr rss rst rta rtb rtc rtk rtl rtm rto rtr rts rtt saa sab sac sak sal sam sao sar sas sat sba sbb sbc sbk sbl sbm sbo sbr sbs sbt sca scb scc sck scl scm sco scr scs sct sk- ska skb skc skk skl skm sko skr sks skt sla slb slc slk sll slm slo slr sls slt sma smb smc smk sml smm smo smr sms smt soa sob soc sok sol som soo sor sos sot sr- sra srb src srk srl srm sro srr srs srt ss- ssa ssb ssc ssk ssl ssm sso ssr sss sst sta stb stc stk stl stm sto str sts stt taa tab tac tak tal tam tao tar tas tat tba tbb tbc tbk tbl tbm tbo tbr tbs tbt tca tcb tcc tck tcl tcm tco tcr tcs tct tka tkb tkc tkk tkl tkm tko tkr tks tkt tla tlc tlk tll tlm tlo tlr tls tlt tma tmb tmc tmk tml tmm tmo tmr tms tmt to- toa tob toc tok tol tom too tor tos tot tra trb trc trk trl trm tro trr trs trt tsa tsb tsc tsk tsl tsm tso tsr tss tst tta ttb ttc ttk ttl ttm tto ttr tts