a-a a-c aaa aac aaf aam aao aas aau ac- aca acc acf acm aco acs acu af- afa afc aff afm afo afs afu ama amc amf amm amo ams amu aoa aoc aof aom aoo aos aou as- asa asc asf asm aso ass asu au- aua auc auf aum auo aus c-- caa cac caf cam cao cas cau cca ccc ccf ccm cco ccs ccu cfa cfc cff cfm cfo cfs cfu cma cmc cmf cmm cmo cms cmu co- coa coc cof com coo cos cou csa csc csf csm cso css csu cua cuc cuf cum cuo cus cuu faa fac faf fam fao fas fau fca fcc fcf fcm fco fcs fcu ffa ffc fff ffm ffo ffs ffu fma fmc fmf fmm fmo fms fmu foa foc fof fom foo fos fou fsa fsc fsf fsm fso fss fsu fua fuf fum fuo fus fuu m-f m-o maa mac maf mam mao mas mau mc- mca mcc mcf mcm mco mcs mcu mfa mfc mff mfm mfo mfs mfu mma mmc mmf mmm mmo mms mmu moa moc mof mom moo mos mou msa msc msf msm mso mss msu mua muc muf mum mus muu oaa oac oaf oam oao oas oau oc- oca occ ocf ocm oco ocs ocu of- ofa ofc off ofm ofo ofs ofu om- oma omc omf omm omo oms omu oo- ooa ooc oof oom ooo oos os- osa osc osf osm oso oss osu ou- oua ouc ouf oum ouo ous saa sac saf sam sao sas sau sca scc scf scm sco scs scu sfa sfc sff sfm sfo sfs sfu sma smc smf smm smo sms smu soa soc sof som soo sos sou ss- ssa ssc ssf ssm sso sss ssu sua suc suf sum suo sus suu ua- uaa uac uaf uam uao uas uau uca ucc ucf ucm uco ucs ucu ufa ufc uff ufm ufo ufs ufu um- uma umc umf umm umo ums umu uoa uoc uom uoo uos usa usc usf usm uso uss usu uua uuc uum uus uuu