-er a-a a-c aaa aac aae aag aah aan aao aar ac- aca acc ace acg ach acn aco acr aea aec aee aeg aeh aen aeo aer ag- aga agc age agg agh agn ago agr aha ahc ahe ahg ahh ahn aho ahr an- ana anc ane ang anh ann ano anr aoa aoc aoe aog aoh aon aoo aor ar- ara arc are arg arh arn aro arr c-- caa cac cae cag cah can cao car cca ccc cce ccg cch ccn cco ccr ce- cea cec cee ceg ceh cen ceo cer cga cgc cge cgg cgh cgn cgo cgr ch- cha chc che chg chh chn cho chr cn- cna cnc cne cng cnh cnn cno cnr co- coa coc coe cog coh con coo cor cra crc cre crg crh crn cro crr eaa eac eae eag eah ean eao ear ec- eca ecc ece ecg ech ecn eco ecr eea eec eee eeg een eeo eer ega egc ege egg egh egn ego egr eha ehc ehe ehg ehh ehn eho ehr en- ena enc ene eng enh enn eno enr eo- eoa eoc eoe eog eoh eon eoo eor era erc ere erg erh ern ero err gaa gac gae gag gah gan gao gar gca gcc gce gcg gch gcn gco gcr ge- gea gec gee geg geh gen geo ger gga ggc ggg ggh ggn ggo ggr gha ghc ghe ghg ghh ghn gho ghr gna gnc gne gnn gno gnr goa goc goe gog goh gon goo gor gra grc gre grg grh grn gro grr haa hac hae hag hah han hao har hca hcc hce hcg hch hcn hco hcr he- hea hec hee heg heh hen heo her hga hgc hge hgg hgh hgn hgo hgr hha hhc hhe hhg hhh hhn hho hhr hna hnc hne hng hnh hnn hno hoa hoc hoe hog hoh hon hoo hor hr- hra hrc hre hrg hrh hrn hro hrr naa nac nae nag nah nan nao nar nca ncc nce ncg nch ncn nco ncr ne- nea nec nee neg neh nen neo ner nga ngc nge ngg ngh ngn ngo nha nhc nhe nhg nhh nhn nhr nna nnc nne nng nnh nnn nno no- noa noc noe nog noh non noo nor nra nrc nre nrg nrn nro nrr oaa oac oae oag oah oan oao oar oc- oca occ ocg och ocn oco ocr oea oec oee oeg oeh oen oeo oer oga ogc oge ogg ogh ogn ogo oha ohc ohe ohg ohh ohn oho ohr on- ona onc one ong onh onn ono onr oo- ooa ooc oog ooh oon ooo oor or- ora orc ore org orh orn oro orr ra- raa rac rae rag rah ran rao rar rca rcc rce rcg rch rcn rco rcr re- rea rec ree reg reh ren reo rer rga rgc rge rgg rgh rgn rgo rgr rh- rha rhc rhe rhg rhh rhn rho rhr rna rnc rng rnh rnn rno rnr roa roc roe rog roh ron roo ror rra rrc rrg rrh rrn rrr