-al -er -ol a-a a-b a-c a-t aaa aab aac aae aak aal aao aap aar aas aat ab- aba abb abc abe abk abl abo abp abr abs abt ac- aca acb acc ace ack acl aco acp acr acs act aea aeb aec aee aek ael aeo aep aer aes aet aka akb akc ake akk akl ako akp akr aks al- ala alb alc ale alk all alo alp alr als alt aoa aob aoc aoe aok aol aoo aop aor aos aot ap- apa apb apc ape apk apl apo app apr aps apt ar- ara arb arc are ark arl aro arp arr ars art as- asa asb asc ase ask asl aso asp asr ass ast at- ata atb atc ate atl ato atp atr ats att b-p baa bab bac bae bak bal bao bap bar bas bat bba bbb bbc bbe bbk bbl bbo bbp bbr bbs bbt bca bcb bcc bce bck bcl bco bcp bcr bcs bct be- bea beb bec bee bek bel beo bep ber bes bet bka bkb bkc bke bkk bkl bko bkp bkr bks bkt bla blb blc ble blk bll blo blp blr bls blt boa bob boc boe bok bol boo bop bor bos bot bpa bpb bpc bpe bpl bpo bpp bpr bps bpt bra brb bre brk brl bro brp brr brs brt bsa bsb bsc bse bsk bsl bso bsp bsr bss bst bta btb btc bte btk btl bto btp btr bts btt c-- caa cab cac cae cak cal cao cap car cas cat cba cbb cbc cbe cbk cbl cbo cbp cbr cbs cbt cca ccb ccc cce cck ccl cco ccp ccr ccs cct ce- cea ceb cec cee cek cel ceo cep cer ces cet cka ckb ckc cko cks ckt cl- cla clb clc cle clk cll clo clp clr cls clt co- coa cob coc coe cok col coo cop cor cos cot cpa cpb cpc cpe cpk cpl cpo cpp cpr cps cpt cra crb crc cre crk crl cro crp crr crs crt csa csb csc cse csk csl cso csp csr css cst cta ctb ctc cte ctk ctl cto ctp ctr cts ctt eaa eab eac eae eak eal eao eap ear eas eat eba ebb ebc ebe ebk ebl ebo ebp ebr ebs ebt ec- eca ecb ecc ece eck ecl eco ecr ecs ect eea eeb eec eee eek eel eeo eep eer ees eet eka ekb ekc eke ekl eko ekp ekr eks ekt ela elb elc ele elk ell elo elp elr els elt eo- eoa eob eoc eoe eok eol eoo eop eor eos eot ep- epa epb epc epe epl epo epp epr eps ept era erb erc ere erk erl ero erp err ers ert es- esa esb esc ese esk esl eso esp esr ess est eta etb etc ete etk etl eto etp etr ets ett k-t ka- kaa kab kac kae kak kal kao kap kar kas kat kba kbb kbc kbe kbk kbl kbo kbp kbr kbs kca kcb kcc kce kck kcl kcp kcr kcs kct ke- kea keb kec kee kek kel keo kep ker kes ket kkb kkc kke kkk kkl kkp kkr kks kkt kl- kla klb klc klo klr kls klt koa kob koc koe kok kol koo kop kor kos kot kpa kpc kpe kpk kpl kpo kpp kpr kps kpt kra krc krk krl kro krp krr krs krt ksa ksb ksc kse ksk ksl kso ksp ksr kss kst kta ktb ktc kte ktk ktl kto ktp ktr kts ktt l-p la- laa lab lac lae lak lal lao lap lar las lat lba lbb lbc lbe lbk lbl lbo lbp lbr lbs lbt lca lcb lcc lce lck lcl lco lcp lcr lcs lct lea leb lec lee lek lel leo lep ler les let lka lkb lkl lkp lkr lks lkt lla llb llc lle llk lll llo llp llr lls llt loa lob loc loe lok lol loo lop lor los lot lpa lpb lpc lpe lpk lpl lpo lpp lpr lps lpt lra lrb lrc lrk lro lrp lrr lrs lrt lsa lsb lsc lse lsk lsl lso lsp lsr lss lst lta ltb ltc lte ltk ltl lto ltp ltr lts ltt oaa oab oac oae oak oal oao oap oar oas oat ob- oba obb obc obe obk obl obo obp obr obs obt oc- oca ocb occ ock ocl oco ocp ocr ocs oct oea oeb oec oee oel oeo oep oer oes oet oka okb okc oke okk okl oko okp okr oks ola olb olc ole olk oll olo olp ols olt oo- ooa oob ooc ook ool ooo oop oor oos oot op- opa opb opc ope opk opl opo opp opr ops opt or- ora orb orc ore ork orl oro orp orr ors ort os- osa osb osc ose osk osl oso osp osr oss ost ot- ota otb otc ote otk otl oto otp otr ots ott p-p paa pab pac pae pak pal pao pap par pas pat pba pbb pbc pbe pbk pbl pbo pbp pbr pbs pbt pca pcb pcc pce pck pcl pco pcp pcr pcs pct pea peb pec pee pek pel peo pep per pes pet pka pkb pkc pke pkl pko pkp pkr pks pkt pla plb plc ple plk pll plo plp plr pls plt poa pob poc poe pok pol poo pop por pos pot ppa ppb ppc ppe ppk ppl ppo ppp ppr pps ppt pra prb prc pre prk prl pro prp prr prs prt ps- psa psb psc pse psk psl pso psp psr pss pst pt- pta ptb ptc pte ptk ptl pto ptp ptr pts ptt ra- raa rab rac rae rak ral rao rap rar ras rat rba rbb rbc rbe rbk rbl rbo rbp rbr rbs rbt rca rcb rcc rce