a-a a-c aaa aac aan aar aau ac- aca acc acn acr acu an- ana anc ann anr anu ar- ara arc arn arr aru au- aua auc aun aur c-- caa cac can car cau cca ccc ccn ccr ccu cn- cna cnc cnn cnr cnu cra crc crn crr cru cua cuc cun cur cuu naa nac nan nar nau nca ncc ncn ncr ncu nna nnc nnn nnu nra nrc nrn nrr nru nua nuc nun nur nuu ra- raa rac ran rar rau rca rcc rcn rcr rcu rna rnc rnn rnr rnu rra rrc rrn rrr rru rua ruc run rur ruu ua- uaa uac uan uar uau uca ucc ucn ucr ucu un- una unc unn unr unu ur- ura urc urn urr uru uua uuc uun uur uuu