-al a-a a-b a-c a-t aaa aab aac aak aal aap aar aas aat ab- aba abb abc abk abl abp abr abs abt ac- aca acb acc ack acl acp acr acs act aka akb akc akk akl akp akr aks al- ala alb alc alk all alp alr als alt ap- apa apb apc apk apl app apr aps apt ar- ara arb arc ark arl arp arr ars art as- asa asb asc ask asl asp asr ass ast at- ata atb atc atl atp atr ats att b-p baa bab bac bak bal bap bar bas bat bba bbb bbc bbk bbl bbp bbr bbs bbt bca bcb bcc bck bcl bcp bcr bcs bct bka bkb bkc bkk bkl bkp bkr bks bkt bla blb blc blk bll blp blr bls blt bpa bpb bpc bpl bpp bpr bps bpt bra brb brk brl brp brr brs brt bsa bsb bsc bsk bsl bsp bsr bss bst bta btb btc btk btl btp btr bts btt c-- caa cab cac cak cal cap car cas cat cba cbb cbc cbk cbl cbp cbr cbs cbt cca ccb ccc cck ccl ccp ccr ccs cct cka ckb ckc cks ckt cl- cla clb clc clk cll clp clr cls clt cpa cpb cpc cpk cpl cpp cpr cps cpt cra crb crc crk crl crp crr crs crt csa csb csc csk csl csp csr css cst cta ctb ctc ctk ctl ctp ctr cts ctt k-t ka- kaa kab kac kak kal kap kar kas kat kba kbb kbc kbk kbl kbp kbr kbs kca kcb kcc kck kcl kcp kcr kcs kct kkb kkc kkk kkl kkp kkr kks kkt kl- kla klb klc klr kls klt kpa kpc kpk kpl kpp kpr kps kpt kra krc krk krl krp krr krs krt ksa ksb ksc ksk ksl ksp ksr kss kst kta ktb ktc ktk ktl ktp ktr kts ktt l-p la- laa lab lac lak lal lap lar las lat lba lbb lbc lbk lbl lbp lbr lbs lbt lca lcb lcc lck lcl lcp lcr lcs lct lka lkb lkl lkp lkr lks lkt lla llb llc llk lll llp llr lls llt lpa lpb lpc lpk lpl lpp lpr lps lpt lra lrb lrc lrk lrp lrr lrs lrt lsa lsb lsc lsk lsl lsp lsr lss lst lta ltb ltc ltk ltl ltp ltr lts ltt p-p paa pab pac pak pal pap par pas pat pba pbb pbc pbk pbl pbp pbr pbs pbt pca pcb pcc pck pcl pcp pcr pcs pct pka pkb pkc pkl pkp pkr pks pkt pla plb plc plk pll plp plr pls plt ppa ppb ppc ppk ppl ppp ppr pps ppt pra prb prc prk prl prp prr prs prt ps- psa psb psc psk psl psp psr pss pst pt- pta ptb ptc ptk ptl ptp ptr pts ptt ra- raa rab rac rak ral rap rar ras rat rba rbb rbc rbk rbl rbp rbr rbs rbt rca rcb rcc rcl rcp rcr rcs rct rkb rkc rkk rkp rks rkt rla rlc rll rlp rlr rls rlt rpa rpb rpc rpk rpl rpp rpr rps rpt rra rrb rrc rrk rrl rrp rrr rrs rrt rsa rsb rsc rsk rsl rsp rsr rss rst rta rtb rtc rtk rtl rtp rtr rts rtt saa sab sac sak sal sap sar sas sat sba sbb sbc sbk sbl sbp sbr sbs sbt sca scb scc sck scl scp scr scs sct sk- ska skb skc skk skl skp skr sks skt sla slb slc slk sll slp slr sls slt spa spb spc spk spl spp spr sps spt sr- sra srb src srk srl srp srr srs srt ss- ssa ssb ssc ssk ssl ssp ssr sss sst sta stb stc stk stl stp str sts stt taa tab tac tak tal tap tar tas tat tba tbb tbc tbk tbl tbp tbr tbs tbt tca tcb tcc tck tcl tcp tcr tcs tct tka tkb tkc tkk tkl tkp tkr tks tkt tla tlc tlk tll tlp tlr tls tlt tpa tpb tpc tpk tpl tpp tpr tps tpt tra trb trc trk trl trp trr trs trt tsa tsb tsc tsk tsl tsp tsr tss tst tta ttb ttc ttk ttl ttp ttr tts ttt

a-ak aaaa aaab aaac aaal aaap aaar aaas aaba aabb aabc aabl aabp aabt aaca aacb aacc aack aacl aacp aacr aacs aact aaka aala aalc aall aals aapa aapc aapl aaps aapt aara aarc aarp aars aart aasa aasc aass aast aata aatc aatk aatt abaa abab abac abak abal abap abar abas abat abb- abba abbb abbr abbs abbt abca abcb abcc abcl abcp abcr abcs abct abla abls abpa abpc abpp abpr abps abra abrc abrs abs- absa absl absp abss abta abts ac-t acaa acab acac acap acar acas acat acba acbl acca accc accp accs acct acks acla aclc aclr acls acpa acpr acps acpt acr- acra acrc acrr acrs acsa acsc acsl acss acst acta actc actl acts actt akaa akal akap akar akas akca akka akr- akra aksa akst al-p alaa alac alak alal alap alar alas alat alb- alba albc albs alca alcc alcs alk- alka alkb all- alla alll allr alls alpa alpl alps alsa alsc alst alta alts apac apak apal apap apar apas apat apba apbr apbs apca apcb apcc apcr apcs apl- apla aplp apls appa appc appl appr apps appt apra aprc aprs aprt apsa apsl apss apta aptc apts aptt arab arac arak aral arap arar aras arat arba arbs arc- arca arcs arct arka arks arla arpa arpl arps arr- arra arrc arrk arrr arrs arrt ars- arsa arsc arsk arst arta artc artr arts asaa asab asac asak asal asap asar asas asat asba asc- asca ascb ascc ascl ascp ascr asct aska askr asks askt asla aslr aspa aspc aspl aspr asps aspt