a-a a-c aaa aac aan aao aar aas aau ac- aca acc acn aco acr acs acu an- ana anc ann ano anr ans anu aoa aoc aon aoo aor aos aou ar- ara arc arn aro arr ars aru as- asa asc asn aso asr ass asu au- aua auc aun auo aur aus c-- caa cac can cao car cas cau cca ccc ccn cco ccr ccs ccu cn- cna cnc cnn cno cnr cns cnu co- coa coc con coo cor cos cou cra crc crn cro crr crs cru csa csc csn cso csr css csu cua cuc cun cuo cur cus cuu naa nac nan nao nar nas nau nca ncc ncn nco ncr ncs ncu nna nnc nnn nno nns nnu no- noa noc non noo nor nos nou nra nrc nrn nro nrr nrs nru nsa nsc nsn nso nsr nss nsu nua nuc nun nuo nur nus nuu oaa oac oan oao oar oas oau oc- oca occ ocn oco ocr ocs ocu on- ona onc onn ono onr ons onu oo- ooa ooc oon ooo oor oos or- ora orc orn oro orr ors oru os- osa osc osn oso osr oss osu ou- oua ouc oun ouo our ous ra- raa rac ran rao rar ras rau rca rcc rcn rco rcr rcs rcu rna rnc rnn rno rnr rns rnu roa roc ron roo ror ros rou rra rrc rrn rrr rrs rru rsa rsc rsn rso rsr rss rsu rua ruc run ruo rur rus ruu saa sac san sao sar sas sau sca scc scn sco scr scs scu sna snc snn sno snr sns snu soa soc son soo sor sos sou sr- sra src srn sro srr srs ss- ssa ssc ssn sso ssr sss ssu sua suc sun suo sur sus suu ua- uaa uac uan uao uar uas uau uca ucc ucn uco ucr ucs ucu un- una unc unn uno unr uns unu uoa uoc uon uoo uor uos ur- ura urc urn uro urr urs uru usa usc usn uso usr uss usu uua uuc uun uur uus uuu