a-a a-c aaa aac aah aak aan aao aap aar ac- aca acc ach ack acn aco acp acr aha ahc ahh ahk ahn aho ahp ahr aka akc akh akk akn ako akp akr an- ana anc anh ank ann ano anp anr aoa aoc aoh aok aon aoo aop aor ap- apa apc aph apk apn apo app apr ar- ara arc arh ark arn aro arp arr c-- caa cac cah cak can cao cap car cca ccc cch cck ccn cco ccp ccr ch- cha chc chh chk chn cho chp chr cka ckc ckh cko cn- cna cnc cnh cnn cno cnp cnr co- coa coc coh cok con coo cop cor cpa cpc cph cpk cpn cpo cpp cpr cra crc crh crk crn cro crp crr haa hac hah hak han hao hap har hca hcc hch hck hcn hco hcp hcr hha hhc hhh hhk hhn hho hhp hhr hka hkh hkk hkn hko hkp hkr hna hnc hnh hnk hnn hno hoa hoc hoh hok hon hoo hop hor hpa hpc hph hpk hpn hpo hpp hpr hr- hra hrc hrh hrk hrn hro hrp hrr ka- kaa kac kah kak kan kao kap kar kca kcc kch kck kcn kcp kcr kha khh khk khn kho khr kkc kkh kkk kkn kkp kkr kn- kna knc knk knn kno knp knr koa koc koh kok kon koo kop kor kpa kpc kph kpk kpn kpo kpp kpr kra krc krk krn kro krp krr naa nac nah nak nan nao nap nar nca ncc nch nck ncn nco ncp ncr nha nhc nhh nhk nhn nhp nhr nka nkc nkk nkn nko nkp nkr nna nnc nnh nnk nnn nno nnp no- noa noc noh nok non noo nop nor npa npc nph npn npo npp npr nra nrc nrk nrn nro nrp nrr oaa oac oah oak oan oao oap oar oc- oca occ och ock ocn oco ocp ocr oha ohc ohh ohn oho ohp ohr oka okc okk oko okp okr on- ona onc onh onk onn ono onp onr oo- ooa ooc ooh ook oon ooo oop oor op- opa opc oph opk opn opo opp opr or- ora orc orh ork orn oro orp orr p-p paa pac pah pak pan pao pap par pca pcc pch pck pcn pco pcp pcr pha phc phk phn pho php phr pka pkc pkn pko pkp pkr pn- pna pnc pnh pnk pnn pno pnp pnr poa poc poh pok pon poo pop por ppa ppc pph ppk ppn ppo ppp ppr pra prc prh prk prn pro prp prr ra- raa rac rah rak ran rao rap rar rca rcc rch rcn rco rcp rcr rh- rha rhc rhh rhn rho rhp rhr rkc rkk rko rkp rna rnc rnh rnn rno rnp rnr roa roc roh rok ron roo rop ror rpa rpc rph rpk rpn rpo rpp rpr rra rrc rrh rrk rrn rrp rrr