a-a a-c aaa aac aah aak aan aao aas ac- aca acc ach ack acn aco acs aha ahc ahh ahk ahn aho ahs aka akc akh akk akn ako aks an- ana anc anh ank ann ano ans aoa aoc aoh aok aon aoo aos as- asa asc ash ask asn aso ass c-- caa cac cah cak can cao cas cca ccc cch cck ccn cco ccs ch- cha chc chh chk chn cho chs cka ckc ckh cko cks cn- cna cnc cnh cnn cno cns co- coa coc coh cok con coo cos csa csc csh csk csn cso css haa hac hah hak han hao has hca hcc hch hck hcn hco hcs hha hhc hhh hhk hhn hho hhs hka hkh hkk hkn hko hks hna hnc hnh hnk hnn hno hns hoa hoc hoh hok hon hoo hos hsa hsc hsh hsk hsn hss ka- kaa kac kah kak kan kao kas kca kcc kch kck kcn kcs kha khh khk khn kho khs kkc kkh kkk kkn kks kn- kna knc knk knn kno koa koc koh kok kon koo kos ksa ksc ksh ksk ksn kso kss naa nac nah nak nan nao nas nca ncc nch nck ncn nco ncs nha nhc nhh nhk nhn nhs nka nkc nkk nkn nko nks nna nnc nnh nnk nnn nno nns no- noa noc noh nok non noo nos nsa nsc nsh nsk nsn nso nss oaa oac oah oak oan oao oas oc- oca occ och ock ocn oco ocs oha ohc ohh ohn oho ohs oka okc okk oko oks on- ona onc onh onk onn ono ons oo- ooa ooc ooh ook oon ooo oos os- osa osc osh osk osn oso oss saa sac sah sak san sao sas sca scc sch sck scn sco scs sh- sha shc shh shk shn sho shs sk- ska skc skh skk sko sks sna snc snk snn sno sns soa soc soh sok son soo sos ss- ssa ssc ssh ssk ssn sso sss