a-a a-c aaa aac aak aam aan aao aas ac- aca acc ack acm acn aco acs aka akc akk akm akn ako aks ama amc amk amm amn amo ams an- ana anc ank anm ann ano ans aoa aoc aok aom aon aoo aos as- asa asc ask asm asn aso ass c-- caa cac cak cam can cao cas cca ccc cck ccm ccn cco ccs cka ckc ckm cko cks cma cmc cmk cmm cmn cmo cms cn- cna cnc cnm cnn cno cns co- coa coc cok com con coo cos csa csc csk csm csn cso css ka- kaa kac kak kam kan kao kas kca kcc kck kcm kcn kcs kkc kkk kkm kkn kks kma kmc kmk kmm kmo kms kn- kna knc knk knm knn kno koa koc kok kom kon koo kos ksa ksc ksk ksm ksn kso kss m-o maa mac mak mam man mao mas mc- mca mcc mck mcm mcn mco mcs mka mkc mkk mkm mkn mko mks mma mmc mmk mmm mmn mmo mms mna mnc mnk mnm mnn mno mns moa moc mok mom mon moo mos msa msc msk msm msn mso mss naa nac nak nam nan nao nas nca ncc nck ncm ncn nco ncs nka nkc nkk nkm nkn nko nks nma nmc nmk nmm nmn nmo nms nna nnc nnk nnm nnn nno nns no- noa noc nok nom non noo nos nsa nsc nsk nsm nsn nso nss oaa oac oak oam oan oao oas oc- oca occ ock ocm ocn oco ocs oka okc okk oko oks om- oma omc omm omn omo oms on- ona onc onk onn ono ons oo- ooa ooc ook oom oon ooo oos os- osa osc osk osm osn oso oss saa sac sak sam san sao sas sca scc sck scm scn sco scs sk- ska skc skk skm sko sks sma smc smk smm smn smo sms sna snc snk snm snn sno sns soa soc sok som son soo sos ss- ssa ssc ssk ssm ssn sso sss