-al -er a-a a-b a-c a-t aaa aab aac aae aal aan aar aat aau ab- aba abb abc abe abl abn abr abt abu ac- aca acb acc ace acl acn acr act acu aea aeb aec aee ael aen aer aet aeu al- ala alb alc ale all aln alr alt alu an- ana anb anc ane anl ann anr ant anu ar- ara arb arc are arl arn arr art aru at- ata atb atc ate atl atn atr att atu au- aua aub auc aue aul aun aur aut b-u baa bab bac bae bal ban bar bat bau bba bbb bbc bbe bbl bbn bbr bbt bbu bca bcb bcc bce bcl bcn bcr bct bcu be- bea beb bec bee bel ben ber bet beu bla blb blc ble bll bln blr blt blu bna bnb bnc bne bnl bnn bnr bnt bnu bra brb bre brl brn brr brt bru bta btb btc bte btl btn btr btt btu bua bub buc bue bul bun bur but buu c-- caa cab cac cae cal can car cat cau cba cbb cbc cbe cbl cbn cbr cbt cbu cca ccb ccc cce ccl ccn ccr cct ccu ce- cea ceb cec cee cel cen cer cet ceu cl- cla clb clc cle cll cln clr clt clu cn- cna cnb cnc cne cnl cnn cnr cnt cnu cra crb crc cre crl crn crr crt cru cta ctb ctc cte ctl ctn ctr ctt ctu cua cub cuc cue cul cun cur cut cuu eaa eab eac eae eal ean ear eat eau eba ebb ebc ebe ebl ebn ebr ebt ebu ec- eca ecb ecc ece ecl ecn ecr ect ecu eea eeb eec eee eel een eer eet ela elb elc ele ell eln elr elt elu en- ena enb enc ene enl enn enr ent enu era erb erc ere erl ern err ert eru eta etb etc ete etl etn etr ett etu eu- eua eub euc eue eul eun eur eut la- laa lab lac lae lal lan lar lat lau lba lbb lbc lbe lbl lbr lbt lbu lca lcb lcc lce lcl lcn lcr lct lcu lea leb lec lee lel len ler let leu lla llb llc lle lll lln llr llt llu lna lnb lnc lne lnl lnn lnr lnt lnu lra lrb lrc lrn lrr lrt lru lta ltb ltc lte ltl ltr ltt ltu lua lub luc lue lul lun lur lut luu naa nab nac nae nal nan nar nat nau nba nbb nbc nbe nbl nbn nbr nbt nbu nca ncb ncc nce ncl ncn ncr nct ncu ne- nea neb nec nee nel nen ner net neu nla nlb nlc nle nll nln nlr nlt nlu nna nnb nnc nne nnl nnn nnt nnu nra nrb nrc nre nrl nrn nrr nrt nru nta ntb ntc nte ntn ntr ntt ntu nua nub nuc nue nul nun nur nut nuu ra- raa rab rac rae ral ran rar rat rau rba rbb rbc rbe rbl rbn rbr rbt rbu rca rcb rcc rce rcl rcn rcr rct rcu re- rea reb rec ree rel ren rer ret reu rla rlc rle rll rln rlr rlt rlu rna rnb rnc rnn rnr rnt rnu rra rrb rrc rrl rrn rrr rrt rru rta rtb rtc rte rtl rtn rtr rtt rtu rua rub ruc rue run rur rut ruu taa tab tac tae tal tan tar tat tau tba tbb tbc tbe tbl tbn tbr tbt tbu tca tcb tcc tce tcl tcn tcr tct tcu te- tea teb tec tee tel ten ter tet teu tla tlc tle tll tln tlr tlt tlu tna tnb tnc tne tnl tnn tnr tnt tra trb trc tre trl trn trr trt tru tta ttb ttc tte ttl ttn ttr ttt ttu tua tub tuc tue tul tun tur tut tuu ua- uaa uab uac uae ual uan uar uat uau uba ubb ubc ube ubl ubn ubr ubt ubu uca ucb ucc uce ucl ucn ucr uct ucu uea ueb uec uee uel uen uer uet ula ulb ulc ule ull uln ulr ult ulu un- una unb unc une unl unn unr unt unu ur- ura urb urc ure url urn urr urt uru uta utb utc ute utl utn utr utt utu uua uuc uue uun uur uut uuu