a-a a-b a-c aaa aab aac aad aae aam aas aau ab- aba abb abc abd abe abm abs abu ac- aca acb acc acd ace acm acs acu ad- ada adb adc add ade adm ads adu aea aeb aec aed aee aem aes aeu ama amb amc amd ame amm ams amu as- asa asb asc asd ase asm ass asu au- aua aub auc aud aue aum aus b-u baa bab bac bad bae bam bas bau bba bbb bbc bbd bbe bbm bbs bbu bca bcb bcc bcd bce bcm bcs bcu bda bdb bdc bdd bde bdm bds bdu be- bea beb bec bed bee bem bes beu bma bmb bmc bmd bme bmm bms bmu bsa bsb bsc bsd bse bsm bss bsu bua bub buc bud bue bum bus buu c-- caa cab cac cad cae cam cas cau cba cbb cbc cbd cbe cbm cbs cbu cca ccb ccc ccd cce ccm ccs ccu cda cdb cdc cdd cde cdm cds cdu ce- cea ceb cec ced cee cem ces ceu cma cmb cmc cmd cme cmm cms cmu csa csb csc csd cse csm css csu cua cub cuc cud cue cum cus cuu daa dab dac dad dae dam das dau dba dbb dbc dbd dbe dbm dbs dbu dca dcb dcc dcd dce dcm dcs dcu dda ddb ddc ddd dde ddm dds ddu de- dea deb dec ded dee dem des deu dma dmb dmc dmd dme dmm dms dmu dsa dsb dsc dsd dse dsm dss dsu dua dub duc dud due dum dus eaa eab eac ead eae eam eas eau eba ebb ebc ebd ebe ebm ebs ebu ec- eca ecb ecc ecd ece ecm ecs ecu ed- eda edb edc edd ede edm eds edu eea eeb eec eed eee eem ees em- ema emb emc emd eme emm ems emu es- esa esb esc esd ese esm ess esu eu- eua eub euc eud eue eus maa mab mac mad mae mam mas mau mba mbb mbc mbd mbe mbm mbs mbu mc- mca mcb mcc mcd mce mcm mcs mcu mda mdb mdc mdd mde mdm mds mdu mea meb mec med mee mem mes meu mma mmb mmc mmd mme mmm mms mmu msa msb msc msd mse msm mss msu mua mub muc mud mue mum mus muu saa sab sac sad sae sam sas sau sba sbb sbc sbd sbe sbm sbs sbu sca scb scc scd sce scm scs scu sda sdb sdc sdd sde sdm sds sdu se- sea seb sec sed see sem ses seu sma smb smc smd sme smm sms smu ss- ssa ssb ssc ssd sse ssm sss ssu sua sub suc sud sue sum sus suu ua- uaa uab uac uad uae uam uas uau uba ubb ubc ube ubs ubu uca ucb ucc ucd uce ucm ucs ucu uda udb udc udd ude udm uds udu uea ueb uec ued uee uem ues um- uma umb umc umd ume umm ums umu usa usb usc usd use usm uss usu uua uuc uue uum uus uuu