-al -er a-a a-b a-c aaa aab aac aad aae aal aam aan aar aau ab- aba abb abc abd abe abl abm abn abr abu ac- aca acb acc acd ace acl acm acn acr acu ad- ada adb adc add ade adl adm adn adr adu aea aeb aec aed aee ael aem aen aer aeu al- ala alb alc ald ale all alm aln alr alu ama amb amc amd ame aml amm amn amr amu an- ana anb anc and ane anl anm ann anr anu ar- ara arb arc ard are arl arm arn arr aru au- aua aub auc aud aue aul aum aun aur b-u baa bab bac bad bae bal bam ban bar bau bba bbb bbc bbd bbe bbl bbm bbn bbr bbu bca bcb bcc bcd bce bcl bcm bcn bcr bcu bda bdb bdc bdd bde bdl bdm bdr bdu be- bea beb bec bed bee bel bem ben ber beu bla blb blc bld ble bll blm bln blr blu bma bmb bmc bmd bme bml bmm bmn bmr bmu bna bnb bnc bnd bne bnl bnn bnr bnu bra brb brd bre brl brm brn brr bru bua bub buc bud bue bul bum bun bur buu c-- caa cab cac cad cae cal cam can car cau cba cbb cbc cbd cbe cbl cbm cbn cbr cbu cca ccb ccc ccd cce ccl ccm ccn ccr ccu cda cdb cdc cdd cde cdl cdm cdn cdr cdu ce- cea ceb cec ced cee cel cem cen cer ceu cl- cla clb clc cld cle cll clm cln clr clu cma cmb cmc cmd cme cml cmm cmn cmr cmu cn- cna cnb cnc cnd cne cnl cnm cnn cnr cnu cra crb crc crd cre crl crm crn crr cru cua cub cuc cud cue cul cum cun cur cuu daa dab dac dad dae dal dam dan dar dau dba dbb dbc dbd dbe dbl dbm dbn dbr dbu dca dcb dcc dcd dce dcl dcm dcn dcr dcu dda ddb ddc ddd dde ddl ddm ddn ddr ddu de- dea deb dec ded dee del dem den der deu dl- dla dlb dlc dld dle dll dlm dlr dlu dma dmb dmc dmd dme dml dmm dmn dmr dmu dna dnb dnc dnd dne dnl dnm dnn dnr dra drb drc drd dre drl drm drn drr dru dua dub duc dud due dul dum dun dur eaa eab eac ead eae eal eam ean ear eau eba ebb ebc ebd ebe ebl ebm ebn ebr ebu ec- eca ecb ecc ecd ece ecl ecm ecn ecr ecu ed- eda edb edc edd ede edl edm edn edr edu eea eeb eec eed eee eel eem een eer ela elb elc eld ele ell elm eln elr elu em- ema emb emc emd eme eml emm emn emr emu en- ena enb enc end ene enl enm enn enr enu era erb erc erd ere erl erm ern err eru eu- eua eub euc eud eue eul eun eur la- laa lab lac lad lae lal lam lan lar lau lba lbb lbc lbd lbe lbl lbm lbr lbu lca lcb lcc lcd lce lcl lcm lcn lcr lcu lda ldb ldc ldd lde ldl ldm ldn ldr ldu lea leb lec led lee lel lem len ler leu lla llb llc lld lle lll llm lln llr llu lma lmb lmc lmd lme lml lmm lmn lmr lmu lna lnb lnc lnd lne lnl lnm lnn lnr lnu lra lrb lrc lrd lrm lrn lrr lru lua lub luc lud lue lul lum lun lur luu m-r maa mab mac mad mae mal mam man mar mau mba mbb mbc mbd mbe mbl mbm mbr mbu mc- mca mcb mcc mcd mce mcl mcm mcn mcr mcu mda mdb mdc mdd mde mdl mdm mdn mdr mdu mea meb mec med mee mel mem men mer meu mla mlb mlc mld mle mll mlm mln mlr mlu mma mmb mmc mmd mme mml mmm mmn mmr mmu mna mnb mnc mne mnl mnm mnn mnr mnu mra mrb mrc mrd mre mrl mrm mrn mrr mru mua mub muc mud mue mul mum mun mur muu naa nab nac nad nae nal nam nan nar nau nba nbb nbc nbd nbe nbl nbm nbn nbr nbu nca ncb ncc ncd nce ncl ncm ncn ncr ncu nda ndb ndc ndd nde ndl ndm ndn ndr ndu ne- nea neb nec ned nee nel nem nen ner neu nla nlb nlc nld nle nll nlm nln nlr nlu nma nmb nmc nmd nme nml nmm nmn nmr nmu nna nnb nnc nne nnl nnm nnn nnu nra nrb nrc nrd nre nrl nrm nrn nrr nru nua nub nuc nud nue nul num nun nur nuu ra- raa rab rac rad rae ral ram ran rar rau rba rbb rbc rbd rbe rbl rbm rbn rbr rbu rca rcb rcc rcd rce rcl rcm rcn rcr rcu rda rdb rdc rdd rde rdl rdm rdn rdr rdu re- rea reb rec red ree rel rem ren rer reu rla rlc rld rle rll rlm rln rlr rlu rma rmb rmc rmd rme rml rmm rmn rmr rna rnb rnc rnd rnm rnn rnr rnu rra rrb rrc rrd rrl rrm rrn rrr rru rua rub ruc rud rue rum run rur ruu ua- uaa uab uac uad uae ual uam uan uar uau uba ubb ubc ube ubl ubn ubr ubu uca ucb ucc ucd uce ucl ucm ucn ucr ucu uda udb udc udd ude udl udm udn udr udu uea ueb uec ued uee uel uem uen uer ula ulb ulc uld ule ull ulm uln ulr ulu um- uma umb umc umd ume uml umm umn umr umu un- una unb unc und une unl unm unn unr unu ur- ura urb urc urd ure url urm urn urr uru uua