-al -er -ol a-a a-b a-c aaa aab aac aae aal aam aan aao aar aau ab- aba abb abc abe abl abm abn abo abr abu ac- aca acb acc ace acl acm acn aco acr acu aea aeb aec aee ael aem aen aeo aer aeu al- ala alb alc ale all alm aln alo alr alu ama amb amc ame aml amm amn amo amr amu an- ana anb anc ane anl anm ann ano anr anu aoa aob aoc aoe aol aom aon aoo aor aou ar- ara arb arc are arl arm arn aro arr aru au- aua aub auc aue aul aum aun auo aur b-u baa bab bac bae bal bam ban bao bar bau bba bbb bbc bbe bbl bbm bbn bbo bbr bbu bca bcb bcc bce bcl bcm bcn bco bcr bcu be- bea beb bec bee bel bem ben beo ber beu bla blb blc ble bll blm bln blo blr blu bma bmb bmc bme bml bmm bmn bmo bmr bmu bna bnb bnc bne bnl bnn bno bnr bnu boa bob boc boe bol bom bon boo bor bou bra brb bre brl brm brn bro brr bru bua bub buc bue bul bum bun buo bur buu c-- caa cab cac cae cal cam can cao car cau cba cbb cbc cbe cbl cbm cbn cbo cbr cbu cca ccb ccc cce ccl ccm ccn cco ccr ccu ce- cea ceb cec cee cel cem cen ceo cer ceu cl- cla clb clc cle cll clm cln clo clr clu cma cmb cmc cme cml cmm cmn cmo cmr cmu cn- cna cnb cnc cne cnl cnm cnn cno cnr cnu co- coa cob coc coe col com con coo cor cou cra crb crc cre crl crm crn cro crr cru cua cub cuc cue cul cum cun cuo cur cuu eaa eab eac eae eal eam ean eao ear eau eba ebb ebc ebe ebl ebm ebn ebo ebr ebu ec- eca ecb ecc ece ecl ecm ecn eco ecr ecu eea eeb eec eee eel eem een eeo eer ela elb elc ele ell elm eln elo elr elu em- ema emb emc eme eml emm emn emo emr emu en- ena enb enc ene enl enm enn eno enr enu eo- eoa eob eoc eoe eol eom eon eoo eor eou era erb erc ere erl erm ern ero err eru eu- eua eub euc eue eul eun eur la- laa lab lac lae lal lam lan lao lar lau lba lbb lbc lbe lbl lbm lbo lbr lbu lca lcb lcc lce lcl lcm lcn lco lcr lcu lea leb lec lee lel lem len leo ler leu lla llb llc lle lll llm lln llo llr llu lma lmb lmc lme lml lmm lmn lmo lmr lmu lna lnb lnc lne lnl lnm lnn lno lnr lnu loa lob loc loe lol lom lon loo lor lou lra lrb lrc lrm lrn lro lrr lru lua lub luc lue lul lum lun luo lur luu m-o m-r maa mab mac mae mal mam man mao mar mau mba mbb mbc mbe mbl mbm mbo mbr mbu mc- mca mcb mcc mce mcl mcm mcn mco mcr mcu mea meb mec mee mel mem men meo mer meu mla mlb mlc mle mll mlm mln mlo mlr mlu mma mmb mmc mme mml mmm mmn mmo mmr mmu mna mnb mnc mne mnl mnm mnn mno mnr mnu moa mob moc moe mol mom mon moo mor mou mra mrb mrc mre mrl mrm mrn mro mrr mru mua mub muc mue mul mum mun mur muu naa nab nac nae nal nam nan nao nar nau nba nbb nbc nbe nbl nbm nbn nbo nbr nbu nca ncb ncc nce ncl ncm ncn nco ncr ncu ne- nea neb nec nee nel nem nen neo ner neu nla nlb nlc nle nll nlm nln nlo nlr nlu nma nmb nmc nme nml nmm nmn nmo nmr nmu nna nnb nnc nne nnl nnm nnn nno nnu no- noa nob noc noe nol nom non noo nor nou nra nrb nrc nre nrl nrm nrn nro nrr nru nua nub nuc nue nul num nun nuo nur nuu oaa oab oac oae oal oam oan oao oar oau ob- oba obb obc obe obl obm obn obo obr obu oc- oca ocb occ ocl ocm ocn oco ocr ocu oea oeb oec oee oel oem oen oeo oer ola olb olc ole oll olm oln olo olu om- oma omb omc ome oml omm omn omo omr omu on- ona onb onc one onl onn ono onr onu oo- ooa oob ooc ool oom oon ooo oor or- ora orb orc ore orl orm orn oro orr oru ou- oua ouc oue oul oum oun ouo our ra- raa rab rac rae ral ram ran rao rar rau rba rbb rbc rbe rbl rbm rbn rbo rbr rbu rca rcb rcc rce rcl rcm rcn rco rcr rcu re- rea reb rec ree rel rem ren reo rer reu rla rlc rle rll rlm rln rlo rlr rlu rma rmb rmc rme rml rmm rmn rmo rmr rna rnb rnc rnm rnn rno rnr rnu roa rob roc roe rol rom ron roo ror rou rra rrb rrc rrl rrm rrn rrr rru rua rub ruc rue rum run ruo rur ruu ua- uaa uab uac uae ual uam uan uao uar uau uba ubb ubc ube ubl ubn ubo ubr ubu uca ucb ucc uce ucl ucm ucn uco ucr ucu uea ueb uec uee uel uem uen uer ula ulb ulc ule ull ulm uln ulo ulr ulu um- uma umb umc ume uml umm umn umo umr umu un- una unb unc une unl unm unn uno unr unu uoa uob uoc uoe uol uom uon uoo uor ur- ura urb urc ure url urm urn uro urr