a-a a-b a-t aaa aab aad aam aas aat aau ab- aba abb abd abm abs abt abu ad- ada adb add adm ads adt adu ama amb amd amm ams amt amu as- asa asb asd asm ass ast asu at- ata atb atd atm ats att atu au- aua aub aud aum aus aut b-u baa bab bad bam bas bat bau bba bbb bbd bbm bbs bbt bbu bda bdb bdd bdm bds bdt bdu bma bmb bmd bmm bms bmt bmu bsa bsb bsd bsm bss bst bsu bta btb btd btm bts btt btu bua bub bud bum bus but buu daa dab dad dam das dat dau dba dbb dbd dbm dbs dbt dbu dda ddb ddd ddm dds ddt ddu dma dmb dmd dmm dms dmt dmu dsa dsb dsd dsm dss dst dsu dta dtb dtd dtm dts dtt dtu dua dub dud dum dus dut maa mab mad mam mas mat mau mba mbb mbd mbm mbs mbt mbu mda mdb mdd mdm mds mdt mdu mma mmb mmd mmm mms mmt mmu msa msb msd msm mss mst msu mta mtb mtd mtm mts mtt mtu mua mub mud mum mus mut muu saa sab sad sam sas sat sau sba sbb sbd sbm sbs sbt sbu sda sdb sdd sdm sds sdt sdu sma smb smd smm sms smt smu ss- ssa ssb ssd ssm sss sst ssu sta stb std stm sts stt stu sua sub sud sum sus sut suu taa tab tad tam tas tat tau tba tbb tbd tbm tbs tbt tbu tda tdb tdd tdm tds tdt tdu tma tmb tmd tmm tms tmt tmu tsa tsb tsd tsm tss tst tsu tta ttb ttd ttm tts ttt ttu tua tub tud tum tus tut tuu ua- uaa uab uad uam uas uat uau uba ubb ubs ubt ubu uda udb udd udm uds udt udu um- uma umb umd umm ums umt umu usa usb usd usm uss ust usu uta utb utd utm uts utt utu uua uum uus uut uuu