-al -ol a-a a-b a-c aaa aab aac aak aal aao aap aas ab- aba abb abc abk abl abo abp abs ac- aca acb acc ack acl aco acp acs aka akb akc akk akl ako akp aks al- ala alb alc alk all alo alp als aoa aob aoc aok aol aoo aop aos ap- apa apb apc apk apl apo app aps as- asa asb asc ask asl aso asp ass b-p baa bab bac bak bal bao bap bas bba bbb bbc bbk bbl bbo bbp bbs bca bcb bcc bck bcl bco bcp bcs bka bkb bkc bkk bkl bko bkp bks bla blb blc blk bll blo blp bls boa bob boc bok bol boo bop bos bpa bpb bpc bpl bpo bpp bps bsa bsb bsc bsk bsl bso bsp bss c-- caa cab cac cak cal cao cap cas cba cbb cbc cbk cbl cbo cbp cbs cca ccb ccc cck ccl cco ccp ccs cka ckb ckc cko cks cl- cla clb clc clk cll clo clp cls co- coa cob coc cok col coo cop cos cpa cpb cpc cpk cpl cpo cpp cps csa csb csc csk csl cso csp css ka- kaa kab kac kak kal kao kap kas kba kbb kbc kbk kbl kbo kbp kbs kca kcb kcc kck kcl kcp kcs kkb kkc kkk kkl kkp kks kl- kla klb klc klo kls koa kob koc kok kol koo kop kos kpa kpc kpk kpl kpo kpp kps ksa ksb ksc ksk ksl kso ksp kss l-p la- laa lab lac lak lal lao lap las lba lbb lbc lbk lbl lbo lbp lbs lca lcb lcc lck lcl lco lcp lcs lka lkb lkl lkp lks lla llb llc llk lll llo llp lls loa lob loc lok lol loo lop los lpa lpb lpc lpk lpl lpo lpp lps lsa lsb lsc lsk lsl lso lsp lss oaa oab oac oak oal oao oap oas ob- oba obb obc obk obl obo obp obs oc- oca ocb occ ock ocl oco ocp ocs oka okb okc okk okl oko okp oks ola olb olc olk oll olo olp ols oo- ooa oob ooc ook ool ooo oop oos op- opa opb opc opk opl opo opp ops os- osa osb osc osk osl oso osp oss p-p paa pab pac pak pal pao pap pas pba pbb pbc pbk pbl pbo pbp pbs pca pcb pcc pck pcl pco pcp pcs pka pkb pkc pkl pko pkp pks pla plb plc plk pll plo plp pls poa pob poc pok pol poo pop pos ppa ppb ppc ppk ppl ppo ppp pps ps- psa psb psc psk psl pso psp pss saa sab sac sak sal sao sap sas sba sbb sbc sbk sbl sbo sbp sbs sca scb scc sck scl sco scp scs sk- ska skb skc skk skl sko skp sks sla slb slc slk sll slo slp sls soa sob soc sok sol soo sop sos spa spb spc spk spl spo spp sps ss- ssa ssb ssc ssk ssl sso ssp sss

a-ak a-ok aaaa aaab aaac aaal aaap aaas aaba aabb aabc aabl aabp aaca aacb aacc aack aacl aaco aacp aacs aaka aala aalc aall aalo aals aaoo aapa aapc aapl aapo aaps aasa aasc aass abaa abab abac abak abal abap abas abb- abba abbb abbo abbs abca abcb abcc abcl abcp abcs abla ablo abls aboa abob abok abol aboo abos abpa abpc abpp abps abs- absa absl absp abss acaa acab acac acap acas acba acbl acca accc acco accp accs acks acla aclc acls acoa acol acop acos acpa acps acsa acsc acsl acss akaa akal akao akap akas akca akka akko aklo akok akos akpo aksa al-p alaa alac alak alal alao alap alas alb- alba albc albo albs alca alcc alco alcs alk- alka alkb alko all- alla alll allo alls aloa aloc alok alol aloo alop alos alpa alpl alpo alps alsa alsc also aoba aoca aocs aokp aoks aola aopo aosp aoss apac apak apal apao apap apas apba apbs apca apcb apcc apco apcs apl- apla aplp apls apo- apoc apoo apop apos appa appc appl apps apsa apsl apso apss asaa asab asac asak asal asao asap asas asba asbo asc- asca ascb ascc ascl asco ascp aska asko asks asla aslo asob asoc asok asop asos aspa aspc aspl aspo asps assa assc assk assl asso assp asss baaa baak baal baas baba babb babo babs bac- baca bacc back baco bacs bak- baka bakl bako baks bala balc balk ball balo bals baol baos bapa bapc bapp baps basa basc bask baso bass bbas bbbb bbbs bblb bbls bcaa bcap bcas bcbc bcbp bcbs bcca bccc bccl bccs bcos bcpl bcpp bcps bcsa bcsc bcsl bcss bksp blaa blab blac blak blas blkb blls blob bloc blok bloo blop blsp blss boab boac boak boal boas boba bobb bobo bobs boca bock boco bocs boka boko boks bola bolk boll bolo bols boob booc book bool boop boos bopa bopp bops bosa bosc bosk boso boss bpcp bpsa bsaa bsac bsap bsas bscp bscs bslc bsos bspp bssc c-bo caaa caab caac caal caap caas caba cabo cabs cac- caca cacc cack caco caka cala calc calk call calo calp cals caol caos capa capb capc capo capp caps casa casb casc cask casl caso casp cass cbac cbal cbbc cbbs cbca cbcc cbcl cbcp cbcs cbka cbkl cbko cblb cblc cbol cbpc cbpp cbsa cbsc ccaa ccab ccac ccap ccas ccba ccbc ccca cccb cccc cccl cccp cccs ccla cclc ccls ccob ccoc ccpa ccpl ccpp ccps ccsa ccsl ccsp ccss ckac ckbc ckck ckcl ckco ckcs ckoa ckob ckoc ckoo ckos ckpc cksa cksb cksl ckso clab clap clas clob clok cloo clop clos clpb clpp clsa clsc coak coal coas coba cobb cobo cobs coca cock coco cocp cok- coka coko