a-a a-b a-c aaa aab aac aah aam aau ab- aba abb abc abh abm abu ac- aca acb acc ach acm acu aha ahb ahc ahh ahm ahu ama amb amc amh amm amu au- aua aub auc auh aum b-u baa bab bac bah bam bau bba bbb bbc bbh bbm bbu bca bcb bcc bch bcm bcu bha bhb bhc bhh bhm bhu bma bmb bmc bmh bmm bmu bua bub buc buh bum buu c-- caa cab cac cah cam cau cba cbb cbc cbh cbm cbu cca ccb ccc cch ccm ccu ch- cha chb chc chh chm chu cma cmb cmc cmh cmm cmu cua cub cuc cuh cum cuu haa hab hac hah ham hau hba hbb hbc hbh hbm hbu hca hcb hcc hch hcm hha hhb hhc hhh hhm hhu hma hmb hmc hmh hmm hmu hua hub huc huh hum huu maa mab mac mah mam mau mba mbb mbc mbh mbm mbu mc- mca mcb mcc mch mcm mcu mha mhc mhh mhm mhu mma mmb mmc mmh mmm mmu mua mub muc muh mum muu ua- uaa uab uac uah uam uau uba ubb ubc ubh ubu uca ucb ucc uch ucm ucu uha uhb uhc uhh uhm uhu um- uma umb umc umh umm umu uua uuc uum uuu