a-a a-b a-c aaa aab aac aad aan aao aar aas aav ab- aba abb abc abd abn abo abr abs abv ac- aca acb acc acd acn aco acr acs acv ad- ada adb adc add adn ado adr ads adv an- ana anb anc and ann ano anr ans anv aoa aob aoc aod aon aoo aor aos aov ar- ara arb arc ard arn aro arr ars arv as- asa asb asc asd asn aso asr ass asv av- ava avb avc avd avn avo avr avs baa bab bac bad ban bao bar bas bav bba bbb bbc bbd bbn bbo bbr bbs bca bcb bcc bcd bcn bco bcr bcs bcv bda bdb bdc bdd bdo bdr bds bdv bna bnb bnc bnd bnn bno bnr bns bnv boa bob boc bod bon boo bor bos bov bra brb brd brn bro brr brs brv bsa bsb bsc bsd bsn bso bsr bss bsv bva bvb bvc bvd bvn bvo bvr bvs bvv c-- caa cab cac cad can cao car cas cav cba cbb cbc cbd cbn cbo cbr cbs cbv cca ccb ccc ccd ccn cco ccr ccs ccv cda cdb cdc cdd cdn cdo cdr cds cdv cn- cna cnb cnc cnd cnn cno cnr cns cnv co- coa cob coc cod con coo cor cos cov cra crb crc crd crn cro crr crs crv csa csb csc csd csn cso csr css csv cva cvb cvc cvd cvn cvo cvr cvs cvv daa dab dac dad dan dao dar das dav dba dbb dbc dbd dbn dbo dbr dbs dbv dca dcb dcc dcd dcn dco dcr dcs dcv dda ddb ddc ddd ddn ddo ddr dds dna dnb dnc dnd dnn dno dnr dns doa dob doc dod don doo dor dos dov dra drb drc drd drn dro drr drs drv dsa dsb dsc dsd dsn dso dsr dss dsv dva dvb dvc dvd dvn dvr dvs naa nab nac nad nan nao nar nas nav nba nbb nbc nbd nbn nbo nbr nbs nbv nca ncb ncc ncd ncn nco ncr ncs ncv nda ndb ndc ndd ndn ndo ndr nds ndv nna nnb nnc nnn nno nns nnv no- noa nob noc nod non noo nor nos nov nra nrb nrc nrd nrn nro nrr nrs nrv nsa nsb nsc nsd nsn nso nsr nss nsv nva nvb nvc nvd nvn nvv oaa oab oac oad oan oao oar oas oav ob- oba obb obc obd obn obo obr obs obv oc- oca ocb occ ocd ocn oco ocr ocs ocv oda odb odc odd odn odo odr ods odv on- ona onb onc ond onn ono onr ons oo- ooa oob ooc ood oon ooo oor oos oov or- ora orb orc ord orn oro orr ors orv os- osa osb osc osd osn oso osr oss osv ov- ova ovb ovc ovd ovo ovs ovv ra- raa rab rac rad ran rao rar ras rav rba rbb rbc rbd rbn rbo rbr rbs rca rcb rcc rcd rcn rco rcr rcs rcv rda rdb rdc rdd rdn rdo rdr rds rdv rna rnb rnc rnd rnn rno rnr rns rnv roa rob roc rod ron roo ror ros rov rra rrb rrc rrd rrn rrr rrs rsa rsb rsc rsd rsn rso rsr rss rsv rva rvb rvc rvd rvn rvo rvr rvs rvv saa sab sac sad san sao sar sas sav sba sbb sbc sbd sbn sbo sbr sbs sbv sca scb scc scd scn sco scr scs scv sda sdb sdc sdd sdn sdo sdr sds sdv sna snb snc snd snn sno snr sns snv soa sob soc sod son soo sor sos sov sr- sra srb src srd srn sro srr srs srv ss- ssa ssb ssc ssd ssn sso ssr sss ssv sva svb svc svd svn svo svr svs svv v-a vaa vab vac vad van vao var vas vav vba vbc vbd vbo vbr vbs vbv vca vcc vcd vcn vco vcr vcs vdb vdc vdd vdo vdr vds vdv vn- vna vnd vno vnr vns vnv voa vob voc vod von voo vor vos vov vra vrb vrc vrd vrn vrr vrs vsa vsb vsc vsd vsn vso vsr vss vsv vva vvb vvc vvo vvr vvs vvv

-ana -vac a-do aaaa aaab aaac aaad aaan aaar aaas aaav aaba aabb aabc aabd aaca aacb aacc aacd aacn aaco aacr aacs aacv aada aadc aads aana aand aaon aaoo aara aarc aard aaro aars aasa aasc aasd aass aava abaa abab abac abad aban abar abas abb- abba abbb abbo abbr abbs abca abcb abcc abcd abcn abcr abcs abda abdo aboa abob abod abon aboo abor abos abov abra abrc abro abrs abs- absa absd abss abva abvd acaa acab acac acad acan acar acas acba acca accc accd acco accs acda acdb acdc acds acoa acod acon acor acos acr- acra acrc acro acrr acrs acrv acsa acsc acsd acss acvs acvv adaa adab adac adad adan adao adar adas adba adbc adcc adcs adda addc addd addn addo addr adds adna adns adob adoc adod adon adoo ador ados adra adro adrs adsa adso adsr adss advb advs ana- anaa anab anac anad anan anao anar anas anba anbb anbo anca ancc anco and- anda ando andr ands anna annb anno anns ano- anoa anod anon anor anos anrc ansa ansd anso aoba aoca aocs aonb aono aora aorb aorn aors aosd aoss arab arac arad aran arar aras arba arbs arc- arca arco arcs arda ardc ardo ards arna arnd arno arns aroa arob arod aron aroo aror aros arr- arra arrc arro arrr arrs ars- arsa arsc arsd arso arva arvn arvo asaa asab asac asad asan asao asar asas asba asbo asc- asca ascb ascc asco ascr asda asdo asds asnc asno asob asoc asod ason asor asos asra asrc asro asrs assa assc assd assn asso assr asss