a-a a-b aaa aab aam aan aao aas aav ab- aba abb abm abn abo abs abv ama amb amm amn amo ams amv an- ana anb anm ann ano ans anv aoa aob aom aon aoo aos aov as- asa asb asm asn aso ass asv av- ava avb avm avn avo avs baa bab bam ban bao bas bav bba bbb bbm bbn bbo bbs bma bmb bmm bmn bmo bms bmv bna bnb bnn bno bns bnv boa bob bom bon boo bos bov bsa bsb bsm bsn bso bss bsv bva bvb bvm bvn bvo bvs bvv m-o m-v maa mab mam man mao mas mav mba mbb mbm mbo mbs mbv mma mmb mmm mmn mmo mms mmv mna mnb mnm mnn mno mns moa mob mom mon moo mos mov msa msb msm msn mso mss msv mva mvb mvm mvn mvo mvs mvv naa nab nam nan nao nas nav nba nbb nbm nbn nbo nbs nbv nma nmb nmm nmn nmo nms nna nnb nnm nnn nno nns nnv no- noa nob nom non noo nos nov nsa nsb nsm nsn nso nss nsv nva nvb nvm nvn nvv oaa oab oam oan oao oas oav ob- oba obb obm obn obo obs obv om- oma omb omm omn omo oms omv on- ona onb onn ono ons oo- ooa oob oom oon ooo oos oov os- osa osb osm osn oso oss osv ov- ova ovb ovo ovs ovv saa sab sam san sao sas sav sba sbb sbm sbn sbo sbs sbv sma smb smm smn smo sms smv sna snb snm snn sno sns snv soa sob som son soo sos sov ss- ssa ssb ssm ssn sso sss ssv sva svb svm svn svo svs svv v-a vaa vab vam van vao vas vav vba vbm vbo vbs vbv vm- vma vmm vmn vmo vn- vna vnm vno vns vnv voa vob vom von voo vos vov vsa vsb vsm vsn vso vss vsv vva vvb vvm vvo vvs vvv