a-a a-c a-t aaa aac aan aar aat aau ac- aca acc acn acr act acu an- ana anc ann anr ant anu ar- ara arc arn arr art aru at- ata atc atn atr att atu au- aua auc aun aur aut c-- caa cac can car cat cau cca ccc ccn ccr cct ccu cn- cna cnc cnn cnr cnt cnu cra crc crn crr crt cru cta ctc ctn ctr ctt ctu cua cuc cun cur cut cuu naa nac nan nar nat nau nca ncc ncn ncr nct ncu nna nnc nnn nnt nnu nra nrc nrn nrr nrt nru nta ntc ntn ntr ntt ntu nua nuc nun nur nut nuu ra- raa rac ran rar rat rau rca rcc rcn rcr rct rcu rna rnc rnn rnr rnt rnu rra rrc rrn rrr rrt rru rta rtc rtn rtr rtt rtu rua ruc run rur rut ruu taa tac tan tar tat tau tca tcc tcn tcr tct tcu tna tnc tnn tnr tnt tra trc trn trr trt tru tta ttc ttn ttr ttt ttu tua tuc tun tur tut tuu ua- uaa uac uan uar uat uau uca ucc ucn ucr uct ucu un- una unc unn unr unt unu ur- ura urc urn urr urt uru uta utc utn utr utt utu uua uuc uun uur uut uuu