-al a-a a-b a-c a-t aaa aab aac aag aal aar aas aat aau ab- aba abb abc abg abl abr abs abt abu ac- aca acb acc acg acl acr acs act acu ag- aga agb agc agg agl agr ags agt agu al- ala alb alc alg all alr als alt alu ar- ara arb arc arg arl arr ars art aru as- asa asb asc asg asl asr ass ast asu at- ata atb atc atg atl atr ats att atu au- aua aub auc aug aul aur aus aut b-u baa bab bac bag bal bar bas bat bau bba bbb bbc bbg bbl bbr bbs bbt bbu bca bcb bcc bcg bcl bcr bcs bct bcu bga bgb bgc bgg bgl bgr bgs bgt bgu bla blb blc blg bll blr bls blt blu bra brb brg brl brr brs brt bru bsa bsb bsc bsg bsl bsr bss bst bsu bta btb btc btg btl btr bts btt btu bua bub buc bug bul bur bus but buu c-- caa cab cac cag cal car cas cat cau cba cbb cbc cbg cbl cbr cbs cbt cbu cca ccb ccc ccg ccl ccr ccs cct ccu cga cgb cgc cgg cgl cgr cgs cgt cgu cl- cla clb clc clg cll clr cls clt clu cra crb crc crg crl crr crs crt cru csa csb csc csg csl csr css cst csu cta ctb ctc ctg ctl ctr cts ctt ctu cua cub cuc cug cul cur cus cut cuu gaa gab gac gag gal gar gas gat gau gba gbc gbg gbl gbr gbs gbt gbu gca gcb gcc gcg gcl gcr gcs gct gcu gga ggb ggc ggg ggr ggs ggt ggu gla glb glc glg gll glr gls glt glu gra grb grc grg grl grr grs grt gru gsa gsb gsc gsg gsl gsr gss gst gsu gta gtb gtc gtg gtl gtr gts gtt gtu gu- gua gub guc gug gul gur gus gut guu la- laa lab lac lag lal lar las lat lau lba lbb lbc lbg lbl lbr lbs lbt lbu lca lcb lcc lcg lcl lcr lcs lct lcu lga lgb lgc lgg lgl lgr lgs lgt lgu lla llb llc llg lll llr lls llt llu lra lrb lrc lrg lrr lrs lrt lru lsa lsb lsc lsg lsl lsr lss lst lsu lta ltb ltc ltg ltl ltr lts ltt ltu lua lub luc lug lul lur lus lut luu ra- raa rab rac rag ral rar ras rat rau rba rbb rbc rbg rbl rbr rbs rbt rbu rca rcb rcc rcg rcl rcr rcs rct rcu rga rgb rgc rgg rgr rgs rgt rla rlc rlg rll rlr rls rlt rlu rra rrb rrc rrg rrl rrr rrs rrt rru rsa rsb rsc rsg rsl rsr rss rst rsu rta rtb rtc rtg rtl rtr rts rtt rtu rua rub ruc rug rur rus rut ruu saa sab sac sag sal sar sas sat sau sba sbb sbc sbg sbl sbr sbs sbt sbu sca scb scc scg scl scr scs sct scu sga sgb sgc sgg sgl sgr sgs sgt sgu sla slb slc slg sll slr sls slt slu sr- sra srb src srg srl srr srs srt ss- ssa ssb ssc ssg ssl ssr sss sst ssu sta stb stc stg stl str sts stt stu sua sub suc sug sul sur sus sut suu taa tab tac tag tal tar tas tat tau tba tbb tbc tbg tbl tbr tbs tbt tbu tca tcb tcc tcg tcl tcr tcs tct tcu tga tgb tgc tgg tgl tgr tgs tgt tgu tla tlc tlg tll tlr tls tlt tlu tra trb trc trg trl trr trs trt tru tsa tsb tsc tsg tsl tsr tss tst tsu tta ttb ttc ttg ttl ttr tts ttt ttu tua tub tuc tug tul tur tus tut tuu ua- uaa uab uac uag ual uar uas uat uau uba ubb ubc ubg ubl ubr ubs ubt ubu uca ucb ucc ucg ucl ucr ucs uct ucu uga ugb ugc ugg ugl ugr ugs ugt ugu ula ulb ulc ulg ull ulr uls ult ulu ur- ura urb urc urg url urr urs urt uru usa usb usc usg usl usr uss ust usu uta utb utc utl utr uts utt utu uua uuc uug uur uus uut uuu