a-a a-b a-c aaa aab aac aae aah aam aao aau aax ab- aba abb abc abe abh abm abo abu abx ac- aca acb acc ace ach acm aco acu acx aea aeb aec aee aeh aem aeo aeu aex aha ahb ahc ahe ahh ahm aho ahu ahx ama amb amc ame amh amm amo amu amx aoa aob aoc aoe aoh aom aoo aou aox au- aua aub auc aue auh aum auo aux ax- axa axe axh axm axo axx b-u baa bab bac bae bah bam bao bau bax bba bbb bbc bbe bbh bbm bbo bbu bbx bca bcb bcc bce bch bcm bco bcu bcx be- bea beb bec bee beh bem beo beu bex bha bhb bhc bhe bhh bhm bho bhu bhx bma bmb bmc bme bmh bmm bmo bmu bmx boa bob boc boe boh bom boo bou box bua bub buc bue buh bum buo buu bux bxb bxm bxo bxx c-- caa cab cac cae cah cam cao cau cax cba cbb cbc cbe cbh cbm cbo cbu cbx cca ccb ccc cce cch ccm cco ccu ccx ce- cea ceb cec cee ceh cem ceo ceu cex ch- cha chb chc che chh chm cho chu chx cma cmb cmc cme cmh cmm cmo cmu cmx co- coa cob coc coe coh com coo cou cox cua cub cuc cue cuh cum cuo cuu cxc cxh cxo cxx eaa eab eac eae eah eam eao eau eax eba ebb ebc ebe ebh ebm ebo ebu ebx ec- eca ecb ecc ece ech ecm eco ecu ecx eea eeb eec eee eem eeo eex eha ehb ehc ehe ehh ehm eho ehu em- ema emb emc eme emh emm emo emu emx eo- eoa eob eoc eoe eoh eom eoo eou eu- eua eub euc eue eux ex- exa exc exe exh exo exu exx haa hab hac hae hah ham hao hau hax hba hbb hbc hbe hbh hbm hbo hbu hbx hca hcb hcc hce hch hcm hco he- hea heb hec hee heh hem heo heu hex hha hhb hhc hhe hhh hhm hho hhu hma hmb hmc hme hmh hmm hmo hmu hmx hoa hob hoc hoe hoh hom hoo hou hox hua hub huc hue huh hum huo huu hux hxc hxm m-o maa mab mac mae mah mam mao mau max mba mbb mbc mbe mbh mbm mbo mbu mbx mc- mca mcb mcc mce mch mcm mco mcu mcx mea meb mec mee meh mem meo meu mex mha mhc mhh mhm mho mhu mhx mma mmb mmc mme mmh mmm mmo mmu mmx moa mob moc moe moh mom moo mou mox mua mub muc mue muh mum muu mux mxa mxc mxu oaa oab oac oae oah oam oao oau oax ob- oba obb obc obe obh obm obo obu obx oc- oca ocb occ och ocm oco ocu ocx oea oeb oec oee oeh oem oeo oex oha ohc ohe ohh ohm oho ohu om- oma omb omc ome omh omm omo omu omx oo- ooa oob ooc ooh oom ooo oox ou- oua ouc oue ouh oum ouo ox- oxa oxb oxc oxo oxx ua- uaa uab uac uae uah uam uao uau uba ubb ubc ube ubh ubo ubu ubx uca ucb ucc uce uch ucm uco ucu uea ueb uec uee ueh uem uha uhb uhc uhe uhh uhm uho uhu um- uma umb umc ume umh umm umo umu uoa uob uoc uoe uom uoo uox uua uuc uue uum uuu uxb uxc uxo uxu xaa xac xam xau xbc xbe xbx xcb xch xcx xee xem xeu xex xma xmc xmh xmm xmo xmu xmx xoa xoc xom xoo xox xue xxo xxx