a-a a-c a-t aaa aac aar aat aau ac- aca acc acr act acu ar- ara arc arr art aru at- ata atc atr att atu au- aua auc aur aut c-- caa cac car cat cau cca ccc ccr cct ccu cra crc crr crt cru cta ctc ctr ctt ctu cua cuc cur cut cuu ra- raa rac rar rat rau rca rcc rcr rct rcu rra rrc rrr rrt rru rta rtc rtr rtt rtu rua ruc rur rut ruu taa tac tar tat tau tca tcc tcr tct tcu tra trc trr trt tru tta ttc ttr ttt ttu tua tuc tur tut tuu ua- uaa uac uar uat uau uca ucc ucr uct ucu ur- ura urc urr urt uru uta utc utr utt utu uua uuc uur uut uuu