-er a-a a-c aaa aac aae aaf aah aan aao aar ac- aca acc ace acf ach acn aco acr aea aec aee aef aeh aen aeo aer af- afa afc afe aff afh afn afo afr aha ahc ahe ahf ahh ahn aho ahr an- ana anc ane anf anh ann ano anr aoa aoc aoe aof aoh aon aoo aor ar- ara arc are arf arh arn aro arr c-- caa cac cae caf cah can cao car cca ccc cce ccf cch ccn cco ccr ce- cea cec cee cef ceh cen ceo cer cfa cfc cfe cff cfh cfn cfo cfr ch- cha chc che chf chh chn cho chr cn- cna cnc cne cnf cnh cnn cno cnr co- coa coc coe cof coh con coo cor cra crc cre crf crh crn cro crr eaa eac eae eaf eah ean eao ear ec- eca ecc ece ecf ech ecn eco ecr eea eec eee eef een eeo eer ef- efa efc efe eff efh efo efr eha ehc ehe ehf ehh ehn eho ehr en- ena enc ene enf enh enn eno enr eo- eoa eoc eoe eof eoh eon eoo eor era erc ere erf erh ern ero err faa fac fae faf fah fan fao far fca fcc fce fcf fcn fco fcr fea fec fee fef feh fen feo fer ffa ffc ffe fff ffh ffn ffo ffr fha fhc fhe fhf fhh fhn fho fhr fna fnc fne fnf fnh fnn fnr foa foc foe fof foh fon foo for fra frc fre frf frh frn fro frr haa hac hae haf hah han hao har hca hcc hce hcf hch hcn hco hcr he- hea hec hee hef heh hen heo her hfa hfc hfe hff hfh hfn hfo hfr hha hhc hhe hhf hhh hhn hho hhr hna hnc hne hnf hnh hnn hno hoa hoc hoe hof hoh hon hoo hor hr- hra hrc hre hrf hrh hrn hro hrr naa nac nae naf nah nan nao nar nca ncc nce ncf nch ncn nco ncr ne- nea nec nee nef neh nen neo ner nfa nfc nfe nff nfn nfo nfr nha nhc nhe nhf nhh nhn nhr nna nnc nne nnf nnh nnn nno no- noa noc noe nof noh non noo nor nra nrc nre nrf nrn nro nrr oaa oac oae oaf oah oan oao oar oc- oca occ ocf och ocn oco ocr oea oec oee oef oeh oen oeo oer of- ofa ofc ofe off ofn ofo ofr oha ohc ohe ohf ohh ohn oho ohr on- ona onc one onf onh onn ono onr oo- ooa ooc oof ooh oon ooo oor or- ora orc ore orf orh orn oro orr ra- raa rac rae raf rah ran rao rar rca rcc rce rcf rch rcn rco rcr re- rea rec ree ref reh ren reo rer rfa rfc rfe rff rfh rfn rfo rfr rh- rha rhc rhe rhf rhh rhn rho rhr rna rnc rnh rnn rno rnr roa roc roe rof roh ron roo ror rra rrc rrf rrh rrn rrr