-al -ol a-a a-b a-c aaa aab aac aal aan aao aar aas ab- aba abb abc abl abn abo abr abs ac- aca acb acc acl acn aco acr acs al- ala alb alc all aln alo alr als an- ana anb anc anl ann ano anr ans aoa aob aoc aol aon aoo aor aos ar- ara arb arc arl arn aro arr ars as- asa asb asc asl asn aso asr ass baa bab bac bal ban bao bar bas bba bbb bbc bbl bbn bbo bbr bbs bca bcb bcc bcl bcn bco bcr bcs bla blb blc bll bln blo blr bls bna bnb bnc bnl bnn bno bnr bns boa bob boc bol bon boo bor bos bra brb brl brn bro brr brs bsa bsb bsc bsl bsn bso bsr bss c-- caa cab cac cal can cao car cas cba cbb cbc cbl cbn cbo cbr cbs cca ccb ccc ccl ccn cco ccr ccs cl- cla clb clc cll cln clo clr cls cn- cna cnb cnc cnl cnn cno cnr cns co- coa cob coc col con coo cor cos cra crb crc crl crn cro crr crs csa csb csc csl csn cso csr css la- laa lab lac lal lan lao lar las lba lbb lbc lbl lbo lbr lbs lca lcb lcc lcl lcn lco lcr lcs lla llb llc lll lln llo llr lls lna lnb lnc lnl lnn lno lnr lns loa lob loc lol lon loo lor los lra lrb lrc lrn lro lrr lrs lsa lsb lsc lsl lsn lso lsr lss naa nab nac nal nan nao nar nas nba nbb nbc nbl nbn nbo nbr nbs nca ncb ncc ncl ncn nco ncr ncs nla nlb nlc nll nln nlo nlr nls nna nnb nnc nnl nnn nno nns no- noa nob noc nol non noo nor nos nra nrb nrc nrl nrn nro nrr nrs nsa nsb nsc nsl nsn nso nsr nss oaa oab oac oal oan oao oar oas ob- oba obb obc obl obn obo obr obs oc- oca ocb occ ocl ocn oco ocr ocs ola olb olc oll oln olo ols on- ona onb onc onl onn ono onr ons oo- ooa oob ooc ool oon ooo oor oos or- ora orb orc orl orn oro orr ors os- osa osb osc osl osn oso osr oss ra- raa rab rac ral ran rao rar ras rba rbb rbc rbl rbn rbo rbr rbs rca rcb rcc rcl rcn rco rcr rcs rla rlc rll rln rlo rlr rls rna rnb rnc rnn rno rnr rns roa rob roc rol ron roo ror ros rra rrb rrc rrl rrn rrr rrs rsa rsb rsc rsl rsn rso rsr rss saa sab sac sal san sao sar sas sba sbb sbc sbl sbn sbo sbr sbs sca scb scc scl scn sco scr scs sla slb slc sll sln slo slr sls sna snb snc snl snn sno snr sns soa sob soc sol son soo sor sos sr- sra srb src srl srn sro srr srs ss- ssa ssb ssc ssl ssn sso ssr sss

-ana aaaa aaab aaac aaal aaan aaar aaas aaba aabb aabc aabl aaca aacb aacc aacl aacn aaco aacr aacs aala aalc aall aalo aals aana aaon aaoo aara aarc aaro aars aasa aasc aass abaa abab abac abal aban abar abas abb- abba abbb abbo abbr abbs abca abcb abcc abcl abcn abcr abcs abla ablo abls aboa abob abol abon aboo abor abos abra abrc abro abrs abs- absa absl abss acaa acab acac acan acar acas acba acbl acca accc acco accs acla aclc aclr acls acoa acol acon acor acos acr- acra acrc acro acrr acrs acsa acsc acsl acss alaa alac alal alan alao alar alas alb- alba albc albo albs alca alcc alco alcs all- alla alll alln allo allr alls alna aloa aloc alol alon aloo alor alos alro alsa alsc alsn also ana- anaa anab anac anal anan anao anar anas anba anbb anbl anbo anca ancc anco anla anlc anln anlo anna annb anno anns ano- anoa anon anor anos anrc ansa anso aoba aoca aocs aola aonb aono aora aorb aorn aors aoss arab arac aral aran arar aras arba arbs arc- arca arco arcs arla arlo arna arno arns aroa arob aron aroo aror aros arr- arra arrc arro arrr arrs ars- arsa arsc arso asaa asab asac asal asan asao asar asas asba asbo asc- asca ascb ascc ascl asco ascr asla aslo aslr asnc asnl asno asob asoc ason asor asos asra asrc asro asrs assa assc assl assn asso assr asss baaa baal baan baar baas baba babb babo babr babs bac- baca bacc bacn baco bacs bala balc ball balo bals bana banc bann bano banr bans baol baon baos bar- bara barb barc barn baro barr bars basa basc baso bass bbas bbbb bbbs bblb bbls bbrc bcaa bcar bcas bcbc bcbs bcca bccc bccl bccs bcor bcos bcra bcrs bcsa bcsc bcsl bcsn bcss blaa blab blac blan blas blls blno blob bloc blon bloo blrc blss bnas bnoc bnor bnrr bnss boab boac boal boan boar boas boba bobb bobo bobs boca boco bocs bola boll boln bolo bols bona bonc bonn bono bons boob booc bool boon boor boos bor- bora born boro borr bors bosa bosc bosn boso boss brab brac bran brao bras brca brcb brls brna brno brns broa brob broc brol bron broo bror bros brrr brrs brsb brsr bsaa bsac bsas bscs bslc bsns bson bsos bsra bssc c-bo caaa caab caac caal caan caas caba cabo cabs cac- caca cacc caco cacr cala calc call calo cals cana canc cann cano cans caol caor caos cara carb carc carl carn caro carr cars casa casb casc casl caso casr cass cbac cbal cbar cbbc cbbs cbca cbcc cbcl cbcn cbcr cbcs cblb cblc cbln cbna