a-a a-c aaa aac aad aaf aam aau ac- aca acc acd acf acm acu ad- ada adc add adf adm adu af- afa afc afd aff afm afu ama amc amd amf amm amu au- aua auc aud auf aum c-- caa cac cad caf cam cau cca ccc ccd ccf ccm ccu cda cdc cdd cdf cdm cdu cfa cfc cfd cff cfm cfu cma cmc cmd cmf cmm cmu cua cuc cud cuf cum cuu daa dac dad daf dam dau dca dcc dcd dcf dcm dcu dda ddc ddd ddf ddm ddu dfa dfc dfd dff dfm dfu dma dmc dmd dmf dmm dmu dua duc dud duf dum faa fac fad faf fam fau fca fcc fcd fcf fcm fcu fda fdc fdd fdf fdm fdu ffa ffc ffd fff ffm ffu fma fmc fmd fmf fmm fmu fua fud fuf fum fuu m-f maa mac mad maf mam mau mc- mca mcc mcd mcf mcm mcu mda mdc mdd mdf mdm mdu mfa mfc mfd mff mfm mfu mma mmc mmd mmf mmm mmu mua muc mud muf mum muu ua- uaa uac uad uaf uam uau uca ucc ucd ucf ucm ucu uda udc udd udf udm udu ufa ufc ufd uff ufm ufu um- uma umc umd umf umm umu uua uuc uum uuu