a-a a-c aaa aac aan aao aar aau ac- aca acc acn aco acr acu an- ana anc ann ano anr anu aoa aoc aon aoo aor aou ar- ara arc arn aro arr aru au- aua auc aun auo aur c-- caa cac can cao car cau cca ccc ccn cco ccr ccu cn- cna cnc cnn cno cnr cnu co- coa coc con coo cor cou cra crc crn cro crr cru cua cuc cun cuo cur cuu naa nac nan nao nar nau nca ncc ncn nco ncr ncu nna nnc nnn nno nnu no- noa noc non noo nor nou nra nrc nrn nro nrr nru nua nuc nun nuo nur nuu oaa oac oan oao oar oau oc- oca occ ocn oco ocr ocu on- ona onc onn ono onr onu oo- ooa ooc oon ooo oor or- ora orc orn oro orr oru ou- oua ouc oun ouo our ra- raa rac ran rao rar rau rca rcc rcn rco rcr rcu rna rnc rnn rno rnr rnu roa roc ron roo ror rou rra rrc rrn rrr rru rua ruc run ruo rur ruu ua- uaa uac uan uao uar uau uca ucc ucn uco ucr ucu un- una unc unn uno unr unu uoa uoc uon uoo uor ur- ura urc urn uro urr uru uua uuc uun uur uuu