a-a a-c aaa aac aak aan aap aar ac- aca acc ack acn acp acr aka akc akk akn akp akr an- ana anc ank ann anp anr ap- apa apc apk apn app apr ar- ara arc ark arn arp arr c-- caa cac cak can cap car cca ccc cck ccn ccp ccr cka ckc cn- cna cnc cnn cnp cnr cpa cpc cpk cpn cpp cpr cra crc crk crn crp crr ka- kaa kac kak kan kap kar kca kcc kck kcn kcp kcr kkc kkk kkn kkp kkr kn- kna knc knk knn knp knr kpa kpc kpk kpn kpp kpr kra krc krk krn krp krr naa nac nak nan nap nar nca ncc nck ncn ncp ncr nka nkc nkk nkn nkp nkr nna nnc nnk nnn nnp npa npc npn npp npr nra nrc nrk nrn nrp nrr p-p paa pac pak pan pap par pca pcc pck pcn pcp pcr pka pkc pkn pkp pkr pn- pna pnc pnk pnn pnp pnr ppa ppc ppk ppn ppp ppr pra prc prk prn prp prr ra- raa rac rak ran rap rar rca rcc rcn rcp rcr rkc rkk rkp rna rnc rnn rnp rnr rpa rpc rpk rpn rpp rpr rra rrc rrk rrn rrp rrr