a-a a-c a-t aaa aac aaf aas aat aau ac- aca acc acf acs act acu af- afa afc aff afs aft afu as- asa asc asf ass ast asu at- ata atc atf ats att atu au- aua auc auf aus aut c-- caa cac caf cas cat cau cca ccc ccf ccs cct ccu cfa cfc cff cfs cft cfu csa csc csf css cst csu cta ctc ctf cts ctt ctu cua cuc cuf cus cut cuu faa fac faf fas fat fau fca fcc fcf fcs fct fcu ffa ffc fff ffs fft ffu fsa fsc fsf fss fst fsu fta ftc ftf fts ftt ftu fua fuf fus fut fuu saa sac saf sas sat sau sca scc scf scs sct scu sfa sfc sff sfs sft sfu ss- ssa ssc ssf sss sst ssu sta stc stf sts stt stu sua suc suf sus sut suu taa tac taf tas tat tau tca tcc tcf tcs tct tcu tfa tfc tff tfs tft tfu tsa tsc tsf tss tst tsu tta ttc ttf tts ttt ttu tua tuc tuf tus tut tuu ua- uaa uac uaf uas uat uau uca ucc ucf ucs uct ucu ufa ufc uff ufs uft ufu usa usc usf uss ust usu uta utc utf uts utt utu uua uuc uus uut uuu