-al -ol a-a a-b a-c a-t aaa aab aac aag aal aao aar aat aau ab- aba abb abc abg abl abo abr abt abu ac- aca acb acc acg acl aco acr act acu ag- aga agb agc agg agl ago agr agt agu al- ala alb alc alg all alo alr alt alu aoa aob aoc aog aol aoo aor aot aou ar- ara arb arc arg arl aro arr art aru at- ata atb atc atg atl ato atr att atu au- aua aub auc aug aul auo aur aut b-u baa bab bac bag bal bao bar bat bau bba bbb bbc bbg bbl bbo bbr bbt bbu bca bcb bcc bcg bcl bco bcr bct bcu bga bgb bgc bgg bgl bgo bgr bgt bgu bla blb blc blg bll blo blr blt blu boa bob boc bog bol boo bor bot bou bra brb brg brl bro brr brt bru bta btb btc btg btl bto btr btt btu bua bub buc bug bul buo bur but buu c-- caa cab cac cag cal cao car cat cau cba cbb cbc cbg cbl cbo cbr cbt cbu cca ccb ccc ccg ccl cco ccr cct ccu cga cgb cgc cgg cgl cgo cgr cgt cgu cl- cla clb clc clg cll clo clr clt clu co- coa cob coc cog col coo cor cot cou cra crb crc crg crl cro crr crt cru cta ctb ctc ctg ctl cto ctr ctt ctu cua cub cuc cug cul cuo cur cut cuu gaa gab gac gag gal gao gar gat gau gba gbc gbg gbl gbo gbr gbt gbu gca gcb gcc gcg gcl gco gcr gct gcu gga ggb ggc ggg ggo ggr ggt ggu gla glb glc glg gll glo glr glt glu goa gob goc gog gol goo gor got gou gra grb grc grg grl gro grr grt gru gta gtb gtc gtg gtl gto gtr gtt gtu gu- gua gub guc gug gul guo gur gut guu la- laa lab lac lag lal lao lar lat lau lba lbb lbc lbg lbl lbo lbr lbt lbu lca lcb lcc lcg lcl lco lcr lct lcu lga lgb lgc lgg lgl lgo lgr lgt lgu lla llb llc llg lll llo llr llt llu loa lob loc log lol loo lor lot lou lra lrb lrc lrg lro lrr lrt lru lta ltb ltc ltg ltl lto ltr ltt ltu lua lub luc lug lul luo lur lut luu oaa oab oac oag oal oao oar oat oau ob- oba obb obc obg obl obo obr obt obu oc- oca ocb occ ocg ocl oco ocr oct ocu oga ogc ogg ogl ogo ogt ola olb olc olg oll olo olt olu oo- ooa oob ooc oog ool ooo oor oot or- ora orb orc org orl oro orr ort oru ot- ota otb otc otg otl oto otr ott otu ou- oua ouc oul ouo our out ra- raa rab rac rag ral rao rar rat rau rba rbb rbc rbg rbl rbo rbr rbt rbu rca rcb rcc rcg rcl rco rcr rct rcu rga rgb rgc rgg rgo rgr rgt rla rlc rlg rll rlo rlr rlt rlu roa rob roc rog rol roo ror rot rou rra rrb rrc rrg rrl rrr rrt rru rta rtb rtc rtg rtl rto rtr rtt rtu rua rub ruc rug ruo rur rut ruu taa tab tac tag tal tao tar tat tau tba tbb tbc tbg tbl tbo tbr tbt tbu tca tcb tcc tcg tcl tco tcr tct tcu tga tgb tgc tgg tgl tgo tgr tgt tgu tla tlc tlg tll tlo tlr tlt tlu to- toa tob toc tog tol too tor tot tou tra trb trc trg trl tro trr trt tru tta ttb ttc ttg ttl tto ttr ttt ttu tua tub tuc tug tul tuo tur tut tuu ua- uaa uab uac uag ual uao uar uat uau uba ubb ubc ubg ubl ubo ubr ubt ubu uca ucb ucc ucg ucl uco ucr uct ucu uga ugb ugc ugg ugl ugo ugr ugt ugu ula ulb ulc ulg ull ulo ulr ult ulu uoa uob uoc uog uol uoo uor uot ur- ura urb urc urg url uro urr urt uru uta utb utc utl uto utr utt utu uua uuc uug uur uut uuu

aaaa aaab aaac aaal aaar aaba aabb aabc aabl aabt aaca aacb aacc aacl aaco aacr aact aacu aala aalc aall aalo aalu aaoo aara aarc aaro aart aaru aata aatc aatt abaa abab abac abag abal abar abat abau abb- abba abbb abbo abbr abbt abca abcb abcc abcl abcr abct abgl abla ablo aboa abob abol aboo abor abot abou abra abrc abro abta abtu abua abug abul abut ac-t acaa acab acac acag acar acat acba acbl acca accc acco acct accu acga acgr acla aclc aclr aclu acoa acog acol acor acot acou acr- acra acrc acro acrr acta actc actg actl acto actt actu acu- acul acuo acur acut ag-o agac agag agal agao agar agat agau agba agbo agca agcc agco agct agga aggu agla aglc aglu agob agog agol agoo agot agou agra agrl agro agta agtr agua agul agur agut alaa alac alag alal alao alar alat alau alb- alba albc albo albu alca alcc alco alg- alga algo all- alla alll allo allr allu aloa aloc alog alol aloo alor alot alou alro alta alto alua alug alur alut aoba aoca aola aora aorb aort aotc aoul aout arab arac arag aral arar arat arau arba arc- arca arco arct arga argb argo arla arlo aroa arob aroo aror arr- arra arrc arrg arro arrr arrt arru arta artc arto artr arua arub arug arul arut at-l at-t ataa atab atac atal atar atat atca atcc atcl atco atcr atgo atla atlo atob atoc atol ator atot atra atrc atro atru atta atto attr attu atua atub