a-a a-b a-c aaa aab aac aah aak aam aau ab- aba abb abc abh abk abm abu ac- aca acb acc ach ack acm acu aha ahb ahc ahh ahk ahm ahu aka akb akc akh akk akm aku ama amb amc amh amk amm amu au- aua aub auc auh auk aum b-u baa bab bac bah bak bam bau bba bbb bbc bbh bbk bbm bbu bca bcb bcc bch bck bcm bcu bha bhb bhc bhh bhk bhm bhu bka bkb bkc bkk bkm bma bmb bmc bmh bmk bmm bmu bua bub buc buh buk bum buu c-- caa cab cac cah cak cam cau cba cbb cbc cbh cbk cbm cbu cca ccb ccc cch cck ccm ccu ch- cha chb chc chh chk chm chu cka ckb ckc ckh ckm cma cmb cmc cmh cmk cmm cmu cua cub cuc cuh cuk cum cuu haa hab hac hah hak ham hau hba hbb hbc hbh hbk hbm hbu hca hcb hcc hch hck hcm hha hhb hhc hhh hhk hhm hhu hka hkb hkh hkk hkm hku hma hmb hmc hmh hmk hmm hmu hua hub huc huh huk hum huu ka- kaa kab kac kah kak kam kau kba kbb kbc kbh kbk kbm kbu kca kcb kcc kch kck kcm kcu kha khh khk khm khu kkb kkc kkh kkk kkm kku kma kmb kmc kmh kmk kmm kmu kub kuc kuh kuk kum kuu maa mab mac mah mak mam mau mba mbb mbc mbh mbk mbm mbu mc- mca mcb mcc mch mck mcm mcu mha mhc mhh mhk mhm mhu mka mkb mkc mkh mkk mkm mku mma mmb mmc mmh mmk mmm mmu mua mub muc muh muk mum muu ua- uaa uab uac uah uak uam uau uba ubb ubc ubh ubk ubu uca ucb ucc uch uck ucm ucu uha uhb uhc uhh uhm uhu uka ukb ukc ukk uku um- uma umb umc umh umm umu uua uuc uum uuu