a-a a-b aaa aab aam aao aas aav aay ab- aba abb abm abo abs abv aby ama amb amm amo ams amv amy aoa aob aom aoo aos aov as- asa asb asm aso ass asv asy av- ava avb avm avo avs avy ay- aya ayo ays baa bab bam bao bas bav bay bba bbb bbm bbo bbs bby bma bmb bmm bmo bms bmv boa bob bom boo bos bov boy bsa bsb bsm bso bss bsv bsy bva bvb bvm bvo bvs bvv by- bya bym byo bys m-o m-v maa mab mam mao mas mav may mba mbb mbm mbo mbs mbv mma mmb mmm mmo mms mmv moa mob mom moo mos mov moy msa msb msm mso mss msv msy mva mvb mvm mvo mvs mvv mvy my- mya myb mym myo mys myv oaa oab oam oao oas oav ob- oba obb obm obo obs obv oby om- oma omb omm omo oms omv omy oo- ooa oob oom ooo oos oov os- osa osb osm oso oss osv ov- ova ovb ovo ovs ovv oya oyo oys saa sab sam sao sas sav say sba sbb sbm sbo sbs sbv sby sma smb smm smo sms smv smy soa sob som soo sos sov soy ss- ssa ssb ssm sso sss ssv sva svb svm svo svs svv svy sy- sya syb sym sys v-a vaa vab vam vao vas vav vay vba vbm vbo vbs vbv vm- vma vmm vmo voa vob vom voo vos vov voy vsa vsb vsm vso vss vsv vva vvb vvm vvo vvs vvv vym yaa yab yam yao yas yav yay ybm ybs yby yma ymm ymo yms yob yom yoo yos yoy ysa ysb ysm yso yss ysy yva yvo yvy yyb yys yyy