a-a a-b a-t aaa aab aak aam aao aar aas aat aau ab- aba abb abk abm abo abr abs abt abu aka akb akk akm ako akr aks aku ama amb amk amm amo amr ams amt amu aoa aob aok aom aoo aor aos aot aou ar- ara arb ark arm aro arr ars art aru as- asa asb ask asm aso asr ass ast asu at- ata atb atm ato atr ats att atu au- aua aub auk aum auo aur aus aut b-u baa bab bak bam bao bar bas bat bau bba bbb bbk bbm bbo bbr bbs bbt bbu bka bkb bkk bkm bko bkr bks bkt bma bmb bmk bmm bmo bmr bms bmt bmu boa bob bok bom boo bor bos bot bou bra brb brk brm bro brr brs brt bru bsa bsb bsk bsm bso bsr bss bst bsu bta btb btk btm bto btr bts btt btu bua bub buk bum buo bur bus but buu k-t ka- kaa kab kak kam kao kar kas kat kau kba kbb kbk kbm kbo kbr kbs kbu kkb kkk kkm kkr kks kkt kku kma kmb kmk kmm kmo kms kmt kmu koa kob kok kom koo kor kos kot kou kra krk kro krr krs krt kru ksa ksb ksk ksm kso ksr kss kst ksu kta ktb ktk ktm kto ktr kts ktt ktu kub kuk kum kur kus kut kuu m-o m-r maa mab mak mam mao mar mas mat mau mba mbb mbk mbm mbo mbr mbs mbt mbu mka mkb mkk mkm mko mkr mks mkt mku mma mmb mmk mmm mmo mmr mms mmt mmu moa mob mok mom moo mor mos mot mou mra mrb mrk mrm mro mrr mrs mrt mru msa msb msk msm mso msr mss mst msu mta mtb mtk mtm mto mtr mts mtt mtu mua mub muk mum mur mus mut muu oaa oab oak oam oao oar oas oat oau ob- oba obb obk obm obo obr obs obt obu oka okb okk oko okr oks oku om- oma omb omm omo omr oms omt omu oo- ooa oob ook oom ooo oor oos oot or- ora orb ork orm oro orr ors ort oru os- osa osb osk osm oso osr oss ost osu ot- ota otb otk otm oto otr ots ott otu ou- oua ouk oum ouo our ous out ra- raa rab rak ram rao rar ras rat rau rba rbb rbk rbm rbo rbr rbs rbt rbu rkb rkk rkm rko rks rkt rku rma rmb rmm rmo rmr rms rmt roa rob rok rom roo ror ros rot rou rra rrb rrk rrm rrr rrs rrt rru rsa rsb rsk rsm rso rsr rss rst rsu rta rtb rtk rtm rto rtr rts rtt rtu rua rub ruk rum ruo rur rus rut ruu saa sab sak sam sao sar sas sat sau sba sbb sbk sbm sbo sbr sbs sbt sbu sk- ska skb skk skm sko skr sks skt sku sma smb smk smm smo smr sms smt smu soa sob sok som soo sor sos sot sou sr- sra srb srk srm sro srr srs srt ss- ssa ssb ssk ssm sso ssr sss sst ssu sta stb stk stm sto str sts stt stu sua sub suk sum suo sur sus sut suu taa tab tak tam tao tar tas tat tau tba tbb tbk tbm tbo tbr tbs tbt tbu tka tkb tkk tkm tko tkr tks tkt tma tmb tmk tmm tmo tmr tms tmt tmu to- toa tob tok tom too tor tos tot tou tra trb trk trm tro trr trs trt tru tsa tsb tsk tsm tso tsr tss tst tsu tta ttb ttk ttm tto ttr tts ttt ttu tua tub tuk tum tuo tur tus tut tuu ua- uaa uab uak uam uao uar uas uat uau uba ubb ubk ubo ubr ubs ubt ubu uka ukb ukk ukr uku um- uma umb umm umo umr ums umt umu uoa uob uok uom uoo uor uos uot ur- ura urb urk urm uro urr urs urt uru usa usb usk usm uso usr uss ust usu uta utb utk utm uto utr uts utt utu uua uum uur uus uut uuu