a-a a-c aaa aac aaf aan aao aas aau ac- aca acc acf acn aco acs acu af- afa afc aff afn afo afs afu an- ana anc anf ann ano ans anu aoa aoc aof aon aoo aos aou as- asa asc asf asn aso ass asu au- aua auc auf aun auo aus c-- caa cac caf can cao cas cau cca ccc ccf ccn cco ccs ccu cfa cfc cff cfn cfo cfs cfu cn- cna cnc cnf cnn cno cns cnu co- coa coc cof con coo cos cou csa csc csf csn cso css csu cua cuc cuf cun cuo cus cuu faa fac faf fan fao fas fau fca fcc fcf fcn fco fcs fcu ffa ffc fff ffn ffo ffs ffu fna fnc fnf fnn fns fnu foa foc fof fon foo fos fou fsa fsc fsf fsn fso fss fsu fua fuf fun fuo fus fuu naa nac naf nan nao nas nau nca ncc ncf ncn nco ncs ncu nfa nfc nff nfn nfo nfs nfu nna nnc nnf nnn nno nns nnu no- noa noc nof non noo nos nou nsa nsc nsf nsn nso nss nsu nua nuc nun nuo nus nuu oaa oac oaf oan oao oas oau oc- oca occ ocf ocn oco ocs ocu of- ofa ofc off ofn ofo ofs ofu on- ona onc onf onn ono ons onu oo- ooa ooc oof oon ooo oos os- osa osc osf osn oso oss osu ou- oua ouc ouf oun ouo ous saa sac saf san sao sas sau sca scc scf scn sco scs scu sfa sfc sff sfn sfo sfs sfu sna snc snf snn sno sns snu soa soc sof son soo sos sou ss- ssa ssc ssf ssn sso sss ssu sua suc suf sun suo sus suu ua- uaa uac uaf uan uao uas uau uca ucc ucf ucn uco ucs ucu ufa ufc uff ufn ufo ufs ufu un- una unc unf unn uno uns unu uoa uoc uon uoo uos usa usc usf usn uso uss usu uua uuc uun uus uuu