-er -ic a-a a-c a-i aaa aac aae aag aah aai aao aap aar aax ac- aca acc ace acg ach aci aco acp acr acx aea aec aee aeg aeh aei aeo aep aer aex ag- aga agc age agg agh agi ago agp agr agx aha ahc ahe ahg ahh ahi aho ahp ahr ahx ai- aia aic aie aig aih aii aio aip air aix aoa aoc aoe aog aoh aoi aoo aop aor aox ap- apa apc ape apg aph api apo app apr apx ar- ara arc are arg arh ari aro arp arr arx ax- axa axe axh axi axo axp axr axx c-- caa cac cae cag cah cai cao cap car cax cca ccc cce ccg cch cci cco ccp ccr ccx ce- cea cec cee ceg ceh cei ceo cep cer cex cga cgc cge cgg cgh cgi cgo cgp cgr ch- cha chc che chg chh chi cho chp chr chx ci- cia cic cie cig cih cii cio cip cir cix co- coa coc coe cog coh coi coo cop cor cox cpa cpc cpe cpg cph cpi cpo cpp cpr cpx cra crc cre crg crh cri cro crp crr crx cxc cxh cxi cxo cxp cxr cxx eaa eac eae eag eah eai eao eap ear eax ec- eca ecc ece ecg ech eci eco ecr ecx eea eec eee eeg eeo eep eer eex ega egc ege egg egh egi ego egp egr egx eha ehc ehe ehg ehh ehi eho ehp ehr eia eic eie eig eii eio eip eir eix eo- eoa eoc eoe eog eoh eoi eoo eop eor ep- epa epc epe epg eph epi epo epp epr epx era erc ere erg erh eri ero erp err ex- exa exc exe exh exi exo exp exr exx g-p gaa gac gae gag gah gai gao gap gar gca gcc gce gcg gch gci gco gcp gcr ge- gea gec gee geg geh gei geo gep ger gex gga ggc ggg ggh ggi ggo ggp ggr gha ghc ghe ghg ghh ghi gho ghp ghr gia gic gie gig gih gii gio gip gir goa goc goe gog goh goi goo gop gor gox gpa gpc gpe gpg gph gpi gpo gpp gpr gpx gra grc gre grg grh gri gro grp grr grx gxa gxp h-i haa hac hae hag hah hai hao hap har hax hca hcc hce hcg hch hci hco hcp hcr he- hea hec hee heg heh hei heo hep her hex hga hgc hge hgg hgh hgi hgo hgp hgr hha hhc hhe hhg hhh hhi hho hhp hhr hia hic hie hig hih hii hio hip hir hix hoa hoc hoe hog hoh hoi hoo hop hor hox hpa hpc hpe hpg hph hpi hpo hpp hpr hr- hra hrc hre hrg hrh hri hro hrp hrr hxc ia- iaa iac iae iag iah iai iao iap iar ica icc ice icg ich ici ico icp icr ie- iea iec iee ieg iei iep ier iex iga igc ige igg igh igi igo igp igr iha ihc ihe ihg ihh ihi iho ihp ihr iia iic iie iih iii iio iip iir iix io- ioa ioc ioe iog ioh ioi ioo iop ior ipa ipc ipe ipg ipi ipo ipp ipr ipx ir- ira irc ire irg iri iro irp irr irx ixc ixe ixi o-i oaa oac oae oag oah oai oao oap oar oax oc- oca occ ocg och oci oco ocp ocr ocx oea oec oee oeg oeh oei oeo oep oer oex oga ogc oge ogg ogh ogi ogo ogp ogx oha ohc ohe ohg ohh ohi oho ohp ohr oia oic oie oii oio oip oir oo- ooa ooc oog ooh ooi ooo oop oor oox op- opa opc ope opg oph opi opo opp opr opx or- ora orc ore org orh ori oro orp orr orx ox- oxa oxc oxi oxo oxx p-p paa pac pae pag pah pai pao pap par pax pca pcc pce pcg pch pci pco pcp pcr pcx pea pec pee peg peh pei peo pep per pex pga pgc pge pgg pgh pgi pgo pgp pgr pha phc phe phg phi pho php phr phx pia pic pie pig pih pii pio pip pir pix poa poc poe pog poh poi poo pop por pox ppa ppc ppe ppg pph ppi ppo ppp ppr ppx pra prc pre prg prh pri pro prp prr prx pxc pxe pxg pxr ra- raa rac rae rag rah rai rao rap rar rax rca rcc rce rcg rch rci rco rcp rcr rcx re- rea rec ree reg reh rei reo rep rer rex rga rgc rge rgg rgh rgi rgo rgp rgr rgx rh- rha rhc rhe rhg rhh rhi rho rhp rhr ria ric rie rig rih rii rio rip rir rix roa roc roe rog roh roi roo rop ror rox rpa rpc rpe rpg rph rpi rpo rpp rpr rpx rra rrc rrg rrh rri rrp rrr rxp rxr xaa xac xag xap xar xch xci xcp xcr xcx xee xeg xep xer xex xge xgi xgp xhp xia xic xie xii xio xix xoa xoc xog xoi xoo xop xor xox xpa xpc xpe xpg xpo xpp xrc xrx xxi xxo xxp xxx