a-a aaa aak aan aap aas aka akk akn akp aks an- ana ank ann anp ans ap- apa apk apn app aps as- asa ask asn asp ass ka- kaa kak kan kap kas kkk kkn kkp kks kn- kna knk knn knp kpa kpk kpn kpp kps ksa ksk ksn ksp kss naa nak nan nap nas nka nkk nkn nkp nks nna nnk nnn nnp nns npa npn npp nps nsa nsk nsn nsp nss p-p paa pak pan pap pas pka pkn pkp pks pn- pna pnk pnn pnp pns ppa ppk ppn ppp pps ps- psa psk psn psp pss saa sak san sap sas sk- ska skk skp sks sna snk snn snp sns spa spk spn spp sps ss- ssa ssk ssn ssp sss