-al -er a-a a-b a-c a-t aaa aab aac aae aag aal aar aat aau ab- aba abb abc abe abg abl abr abt abu ac- aca acb acc ace acg acl acr act acu aea aeb aec aee aeg ael aer aet aeu ag- aga agb agc age agg agl agr agt agu al- ala alb alc ale alg all alr alt alu ar- ara arb arc are arg arl arr art aru at- ata atb atc ate atg atl atr att atu au- aua aub auc aue aug aul aur aut b-u baa bab bac bae bag bal bar bat bau bba bbb bbc bbe bbg bbl bbr bbt bbu bca bcb bcc bce bcg bcl bcr bct bcu be- bea beb bec bee beg bel ber bet beu bga bgb bgc bge bgg bgl bgr bgt bgu bla blb blc ble blg bll blr blt blu bra brb bre brg brl brr brt bru bta btb btc bte btg btl btr btt btu bua bub buc bue bug bul bur but buu c-- caa cab cac cae cag cal car cat cau cba cbb cbc cbe cbg cbl cbr cbt cbu cca ccb ccc cce ccg ccl ccr cct ccu ce- cea ceb cec cee ceg cel cer cet ceu cga cgb cgc cge cgg cgl cgr cgt cgu cl- cla clb clc cle clg cll clr clt clu cra crb crc cre crg crl crr crt cru cta ctb ctc cte ctg ctl ctr ctt ctu cua cub cuc cue cug cul cur cut cuu eaa eab eac eae eag eal ear eat eau eba ebb ebc ebe ebg ebl ebr ebt ebu ec- eca ecb ecc ece ecg ecl ecr ect ecu eea eeb eec eee eeg eel eer eet ega egb egc ege egg egl egr egt egu ela elb elc ele elg ell elr elt elu era erb erc ere erg erl err ert eru eta etb etc ete etg etl etr ett etu eu- eua eub euc eue eug eul eur eut gaa gab gac gae gag gal gar gat gau gba gbc gbe gbg gbl gbr gbt gbu gca gcb gcc gce gcg gcl gcr gct gcu ge- gea geb gec gee geg gel ger get geu gga ggb ggc ggg ggr ggt ggu gla glb glc gle glg gll glr glt glu gra grb grc gre grg grl grr grt gru gta gtb gtc gte gtg gtl gtr gtt gtu gu- gua gub guc gue gug gul gur gut guu la- laa lab lac lae lag lal lar lat lau lba lbb lbc lbe lbg lbl lbr lbt lbu lca lcb lcc lce lcg lcl lcr lct lcu lea leb lec lee leg lel ler let leu lga lgb lgc lge lgg lgl lgr lgt lgu lla llb llc lle llg lll llr llt llu lra lrb lrc lrg lrr lrt lru lta ltb ltc lte ltg ltl ltr ltt ltu lua lub luc lue lug lul lur lut luu ra- raa rab rac rae rag ral rar rat rau rba rbb rbc rbe rbg rbl rbr rbt rbu rca rcb rcc rce rcg rcl rcr rct rcu re- rea reb rec ree reg rel rer ret reu rga rgb rgc rge rgg rgr rgt rla rlc rle rlg rll rlr rlt rlu rra rrb rrc rrg rrl rrr rrt rru rta rtb rtc rte rtg rtl rtr rtt rtu rua rub ruc rue rug rur rut ruu taa tab tac tae tag tal tar tat tau tba tbb tbc tbe tbg tbl tbr tbt tbu tca tcb tcc tce tcg tcl tcr tct tcu te- tea teb tec tee teg tel ter tet teu tga tgb tgc tge tgg tgl tgr tgt tgu tla tlc tle tlg tll tlr tlt tlu tra trb trc tre trg trl trr trt tru tta ttb ttc tte ttg ttl ttr ttt ttu tua tub tuc tue tug tul tur tut tuu ua- uaa uab uac uae uag ual uar uat uau uba ubb ubc ube ubg ubl ubr ubt ubu uca ucb ucc uce ucg ucl ucr uct ucu uea ueb uec uee ueg uel uer uet uga ugb ugc uge ugg ugl ugr ugt ugu ula ulb ulc ule ulg ull ulr ult ulu ur- ura urb urc ure urg url urr urt uru uta utb utc ute utl utr utt utu uua uuc uue uug uur uut uuu

a-be aaaa aaab aaac aaae aaal aaar aaba aabb aabc aabl aabt aaca aacb aacc aace aacl aacr aact aacu aaea aaec aage aala aalc aale aall aalu aara aarc aare aart aaru aata aatc aatt abaa abab abac abae abag abal abar abat abau abb- abba abbb abbe abbr abbt abca abcb abcc abcl abcr abct abec abee abel aber abet abgl abla able abra abrc abta abtu abua abue abug abul abut ac-t acaa acab acac acae acag acar acat acba acbl acca accc acce acct accu ace- acea acec acel acer acet acga acgr acla aclc acle aclr aclu acr- acra acrc acre acrr acta actc acte actg actl actt actu acu- acue acul acur acut aeac aecb aecl aect aeer aega aela aelc aer- aera aerc aeta aetc aetr aett agac agag agal agar agat agau agba agca agcc agce agct agea agee agel ager aget agga agge aggu agla aglc agle aglu agra agre agrl agta agte agtr agua ague agul agur agut alaa alac alae alag alal alar alat alau alb- alba albc albe albu alca alcc alce alea alec alee aleg aler alet aleu alg- alga alge all- alla alle alll allr allu alta alte alua alug alur alut arab arac arae arag aral arar arat arau arba arbe arc- arca arce arct area arec aree areg arel aret areu arga argb arge arla arle arr- arra arrc arre arrg arrr arrt arru arta artc arte artr arua arub arue arug arul arut at-l at-t ataa atab atac atae atal atar atat atca atcc atcl