-er a-a a-c aaa aac aae aah aak aan aar ac- aca acc ace ach ack acn acr aea aec aee aeh aek aen aer aha ahc ahe ahh ahk ahn ahr aka akc ake akh akk akn akr an- ana anc ane anh ank ann anr ar- ara arc are arh ark arn arr c-- caa cac cae cah cak can car cca ccc cce cch cck ccn ccr ce- cea cec cee ceh cek cen cer ch- cha chc che chh chk chn chr cka ckc ckh cn- cna cnc cne cnh cnn cnr cra crc cre crh crk crn crr eaa eac eae eah eak ean ear ec- eca ecc ece ech eck ecn ecr eea eec eee eek een eer eha ehc ehe ehh ehn ehr eka ekc eke ekh ekr en- ena enc ene enh enk enn enr era erc ere erh erk ern err haa hac hae hah hak han har hca hcc hce hch hck hcn hcr he- hea hec hee heh hek hen her hha hhc hhe hhh hhk hhn hhr hka hkh hkk hkn hkr hna hnc hne hnh hnk hnn hr- hra hrc hre hrh hrk hrn hrr ka- kaa kac kae kah kak kan kar kca kcc kce kch kck kcn kcr ke- kea kec kee keh kek ken ker kha khe khh khk khn khr kkc kke kkh kkk kkn kkr kn- kna knc kne knk knn knr kra krc krk krn krr naa nac nae nah nak nan nar nca ncc nce nch nck ncn ncr ne- nea nec nee neh nek nen ner nha nhc nhe nhh nhk nhn nhr nka nkc nke nkk nkn nkr nna nnc nne nnh nnk nnn nra nrc nre nrk nrn nrr ra- raa rac rae rah rak ran rar rca rcc rce rch rcn rcr re- rea rec ree reh rek ren rer rh- rha rhc rhe rhh rhn rhr rkc rke rkk rna rnc rnh rnn rnr rra rrc rrh rrk rrn rrr