-er a-a a-c aaa aac aae aag aah aan aao aap aar ac- aca acc ace acg ach acn aco acp acr aea aec aee aeg aeh aen aeo aep aer ag- aga agc age agg agh agn ago agp agr aha ahc ahe ahg ahh ahn aho ahp ahr an- ana anc ane ang anh ann ano anp anr aoa aoc aoe aog aoh aon aoo aop aor ap- apa apc ape apg aph apn apo app apr ar- ara arc are arg arh arn aro arp arr c-- caa cac cae cag cah can cao cap car cca ccc cce ccg cch ccn cco ccp ccr ce- cea cec cee ceg ceh cen ceo cep cer cga cgc cge cgg cgh cgn cgo cgp cgr ch- cha chc che chg chh chn cho chp chr cn- cna cnc cne cng cnh cnn cno cnp cnr co- coa coc coe cog coh con coo cop cor cpa cpc cpe cpg cph cpn cpo cpp cpr cra crc cre crg crh crn cro crp crr eaa eac eae eag eah ean eao eap ear ec- eca ecc ece ecg ech ecn eco ecr eea eec eee eeg een eeo eep eer ega egc ege egg egh egn ego egp egr eha ehc ehe ehg ehh ehn eho ehp ehr en- ena enc ene eng enh enn eno enp enr eo- eoa eoc eoe eog eoh eon eoo eop eor ep- epa epc epe epg eph epn epo epp epr era erc ere erg erh ern ero erp err g-p gaa gac gae gag gah gan gao gap gar gca gcc gce gcg gch gcn gco gcp gcr ge- gea gec gee geg geh gen geo gep ger gga ggc ggg ggh ggn ggo ggp ggr gha ghc ghe ghg ghh ghn gho ghp ghr gna gnc gne gnn gno gnp gnr goa goc goe gog goh gon goo gop gor gpa gpc gpe gpg gph gpn gpo gpp gpr gra grc gre grg grh grn gro grp grr haa hac hae hag hah han hao hap har hca hcc hce hcg hch hcn hco hcp hcr he- hea hec hee heg heh hen heo hep her hga hgc hge hgg hgh hgn hgo hgp hgr hha hhc hhe hhg hhh hhn hho hhp hhr hna hnc hne hng hnh hnn hno hoa hoc hoe hog hoh hon hoo hop hor hpa hpc hpe hpg hph hpn hpo hpp hpr hr- hra hrc hre hrg hrh hrn hro hrp hrr naa nac nae nag nah nan nao nap nar nca ncc nce ncg nch ncn nco ncp ncr ne- nea nec nee neg neh nen neo nep ner nga ngc nge ngg ngh ngn ngo ngp nha nhc nhe nhg nhh nhn nhp nhr nna nnc nne nng nnh nnn nno nnp no- noa noc noe nog noh non noo nop nor npa npc npe npg nph npn npo npp npr nra nrc nre nrg nrn nro nrp nrr oaa oac oae oag oah oan oao oap oar oc- oca occ ocg och ocn oco ocp ocr oea oec oee oeg oeh oen oeo oep oer oga ogc oge ogg ogh ogn ogo ogp oha ohc ohe ohg ohh ohn oho ohp ohr on- ona onc one ong onh onn ono onp onr oo- ooa ooc oog ooh oon ooo oop oor op- opa opc ope opg oph opn opo opp opr or- ora orc ore org orh orn oro orp orr p-p paa pac pae pag pah pan pao pap par pca pcc pce pcg pch pcn pco pcp pcr pea pec pee peg peh pen peo pep per pga pgc pge pgg pgh pgn pgo pgp pgr pha phc phe phg phn pho php phr pn- pna pnc pne png pnh pnn pno pnp pnr poa poc poe pog poh pon poo pop por ppa ppc ppe ppg pph ppn ppo ppp ppr pra prc pre prg prh prn pro prp prr ra- raa rac rae rag rah ran rao rap rar rca rcc rce rcg rch rcn rco rcp rcr re- rea rec ree reg reh ren reo rep rer rga rgc rge rgg rgh rgn rgo rgp rgr rh- rha rhc rhe rhg rhh rhn rho rhp rhr rna rnc rng rnh rnn rno rnp rnr roa roc roe rog roh ron roo rop ror rpa rpc rpe rpg rph rpn rpo rpp rpr rra rrc rrg rrh rrn rrp rrr