-er a-a a-c aaa aac aad aae aah aak aan aar ac- aca acc acd ace ach ack acn acr ad- ada adc add ade adh adk adn adr aea aec aed aee aeh aek aen aer aha ahc ahd ahe ahh ahk ahn ahr aka akc akd ake akh akk akn akr an- ana anc and ane anh ank ann anr ar- ara arc ard are arh ark arn arr c-- caa cac cad cae cah cak can car cca ccc ccd cce cch cck ccn ccr cda cdc cdd cde cdh cdk cdn cdr ce- cea cec ced cee ceh cek cen cer ch- cha chc chd che chh chk chn chr cka ckc ckd ckh cn- cna cnc cnd cne cnh cnn cnr cra crc crd cre crh crk crn crr daa dac dad dae dah dak dan dar dca dcc dcd dce dck dcn dcr dda ddc ddd dde ddh ddk ddn ddr de- dea dec ded dee deh dek den der dh- dha dhc dhd dhe dhh dhk dhr dka dkc dke dkk dkr dna dnc dnd dne dnh dnk dnn dnr dra drc drd dre drk drn drr eaa eac ead eae eah eak ean ear ec- eca ecc ecd ece ech eck ecn ecr ed- eda edc edd ede edh edk edn edr eea eec eed eee eek een eer eha ehc ehd ehe ehh ehn ehr eka ekc ekd eke ekh ekr en- ena enc end ene enh enk enn enr era erc erd ere erh erk ern err haa hac had hae hah hak han har hca hcc hcd hce hch hck hcn hcr hda hdc hdd hde hdh hdk hdn hdr he- hea hec hed hee heh hek hen her hha hhc hhd hhe hhh hhk hhn hhr hka hkd hkh hkk hkn hkr hna hnc hnd hne hnh hnk hnn hr- hra hrc hrd hre hrh hrk hrn hrr ka- kaa kac kad kae kah kak kan kar kca kcc kcd kce kch kck kcn kcr kda kdc kde kdh kdk kdr ke- kea kec ked kee keh kek ken ker kha khe khh khk khn khr kkc kke kkh kkk kkn kkr kn- kna knc knd kne knk knn knr kra krc krd krk krn krr naa nac nad nae nah nak nan nar nca ncc ncd nce nch nck ncn ncr nda ndc ndd nde ndh ndk ndn ndr ne- nea nec ned nee neh nek nen ner nha nhc nhd nhe nhh nhk nhn nhr nka nkc nke nkk nkn nkr nna nnc nne nnh nnk nnn nra nrc nrd nre nrk nrn nrr ra- raa rac rad rae rah rak ran rar rca rcc rcd rce rch rcn rcr rda rdc rdd rde rdh rdn rdr re- rea rec red ree reh rek ren rer rh- rha rhc rhd rhe rhh rhn rhr rkc rke rkk rna rnc rnd rnh rnn rnr rra rrc rrd rrh rrk rrn rrr