-er a-a a-c aaa aac aae aah aan aao aar ac- aca acc ace ach acn aco acr aea aec aee aeh aen aeo aer aha ahc ahe ahh ahn aho ahr an- ana anc ane anh ann ano anr aoa aoc aoe aoh aon aoo aor ar- ara arc are arh arn aro arr c-- caa cac cae cah can cao car cca ccc cce cch ccn cco ccr ce- cea cec cee ceh cen ceo cer ch- cha chc che chh chn cho chr cn- cna cnc cne cnh cnn cno cnr co- coa coc coe coh con coo cor cra crc cre crh crn cro crr eaa eac eae eah ean eao ear ec- eca ecc ece ech ecn eco ecr eea eec eee een eeo eer eha ehc ehe ehh ehn eho ehr en- ena enc ene enh enn eno enr eo- eoa eoc eoe eoh eon eoo eor era erc ere erh ern ero err haa hac hae hah han hao har hca hcc hce hch hcn hco hcr he- hea hec hee heh hen heo her hha hhc hhe hhh hhn hho hhr hna hnc hne hnh hnn hno hoa hoc hoe hoh hon hoo hor hr- hra hrc hre hrh hrn hro hrr naa nac nae nah nan nao nar nca ncc nce nch ncn nco ncr ne- nea nec nee neh nen neo ner nha nhc nhe nhh nhn nhr nna nnc nne nnh nnn nno no- noa noc noe noh non noo nor nra nrc nre nrn nro nrr oaa oac oae oah oan oao oar oc- oca occ och ocn oco ocr oea oec oee oeh oen oeo oer oha ohc ohe ohh ohn oho ohr on- ona onc one onh onn ono onr oo- ooa ooc ooh oon ooo oor or- ora orc ore orh orn oro orr ra- raa rac rae rah ran rao rar rca rcc rce rch rcn rco rcr re- rea rec ree reh ren reo rer rh- rha rhc rhe rhh rhn rho rhr rna rnc rnh rnn rno rnr roa roc roe roh ron roo ror rra rrc rrh rrn rrr