a-a a-c a-t aaa aac aan aao aas aat aau ac- aca acc acn aco acs act acu an- ana anc ann ano ans ant anu aoa aoc aon aoo aos aot aou as- asa asc asn aso ass ast asu at- ata atc atn ato ats att atu au- aua auc aun auo aus aut c-- caa cac can cao cas cat cau cca ccc ccn cco ccs cct ccu cn- cna cnc cnn cno cns cnt cnu co- coa coc con coo cos cot cou csa csc csn cso css cst csu cta ctc ctn cto cts ctt ctu cua cuc cun cuo cus cut cuu naa nac nan nao nas nat nau nca ncc ncn nco ncs nct ncu nna nnc nnn nno nns nnt nnu no- noa noc non noo nos not nou nsa nsc nsn nso nss nst nsu nta ntc ntn nto nts ntt ntu nua nuc nun nuo nus nut nuu oaa oac oan oao oas oat oau oc- oca occ ocn oco ocs oct ocu on- ona onc onn ono ons ont onu oo- ooa ooc oon ooo oos oot os- osa osc osn oso oss ost osu ot- ota otc otn oto ots ott otu ou- oua ouc oun ouo ous out saa sac san sao sas sat sau sca scc scn sco scs sct scu sna snc snn sno sns snt snu soa soc son soo sos sot sou ss- ssa ssc ssn sso sss sst ssu sta stc stn sto sts stt stu sua suc sun suo sus sut suu taa tac tan tao tas tat tau tca tcc tcn tco tcs tct tcu tna tnc tnn tno tns tnt to- toa toc ton too tos tot tou tsa tsc tsn tso tss tst tsu tta ttc ttn tto tts ttt ttu tua tuc tun tuo tus tut tuu ua- uaa uac uan uao uas uat uau uca ucc ucn uco ucs uct ucu un- una unc unn uno uns unt unu uoa uoc uon uoo uos uot usa usc usn uso uss ust usu uta utc utn uto uts utt utu uua uuc uun uus uut uuu