-er -ic a-a a-b a-c a-i aaa aab aac aae aaf aai aam aao aap aar ab- aba abb abc abe abf abi abm abo abp abr ac- aca acb acc ace acf aci acm aco acp acr aea aeb aec aee aef aei aem aeo aep aer af- afa afb afc afe aff afi afm afo afp afr ai- aia aib aic aie aif aii aim aio aip air ama amb amc ame amf ami amm amo amp amr aoa aob aoc aoe aof aoi aom aoo aop aor ap- apa apb apc ape apf api apm apo app apr ar- ara arb arc are arf ari arm aro arp arr b-p baa bab bac bae baf bai bam bao bap bar bba bbb bbc bbe bbf bbi bbm bbo bbp bbr bca bcb bcc bce bcf bci bcm bco bcp bcr be- bea beb bec bee bef bei bem beo bep ber bfa bfb bfc bfe bff bfi bfm bfo bfp bfr bi- bia bib bic bie bif bii bim bio bip bir bma bmb bmc bme bmf bmi bmm bmo bmp bmr boa bob boc boe bof boi bom boo bop bor bpa bpb bpc bpe bpf bpi bpm bpo bpp bpr bra brb bre brf bri brm bro brp brr c-- caa cab cac cae caf cai cam cao cap car cba cbb cbc cbe cbf cbi cbm cbo cbp cbr cca ccb ccc cce ccf cci ccm cco ccp ccr ce- cea ceb cec cee cef cei cem ceo cep cer cfa cfb cfc cfe cff cfi cfm cfo cfp cfr ci- cia cib cic cie cif cii cim cio cip cir cma cmb cmc cme cmf cmi cmm cmo cmp cmr co- coa cob coc coe cof coi com coo cop cor cpa cpb cpc cpe cpf cpi cpm cpo cpp cpr cra crb crc cre crf cri crm cro crp crr eaa eab eac eae eaf eai eam eao eap ear eba ebb ebc ebe ebf ebi ebm ebo ebp ebr ec- eca ecb ecc ece ecf eci ecm eco ecr eea eeb eec eee eef eem eeo eep eer ef- efa efb efc efe eff efi efm efo efp efr eia eib eic eie eif eii eim eio eip eir em- ema emb emc eme emf emi emm emo emp emr eo- eoa eob eoc eoe eof eoi eom eoo eop eor ep- epa epb epc epe epf epi epm epo epp epr era erb erc ere erf eri erm ero erp err faa fab fac fae faf fai fam fao fap far fba fbb fbc fbe fbf fbi fbm fbo fbp fbr fca fcb fcc fce fcf fci fcm fco fcp fcr fea feb fec fee fef fei fem feo fep fer ffa ffc ffe fff ffi ffm ffo ffp ffr fia fib fic fie fif fii fim fip fir fma fmb fmc fme fmf fmi fmm fmo fmp fmr foa fob foc foe fof foi fom foo fop for fpa fpb fpc fpe fpi fpm fpo fpp fpr fra frb frc fre frf fri frm fro frp frr i-f ia- iaa iab iac iae iaf iai iam iao iap iar iba ibb ibc ibe ibf ibi ibm ibo ibp ibr ica icb icc ice icf ici icm ico icp icr ie- iea iec iee ief iei iem iep ier ifa ifb ifc ife iff ifi ifm ifo ifp ifr iia iib iic iie iif iii iim iio iip iir im- ima imb imc ime imf imi imm imo imp io- ioa iob ioc ioe iof ioi iom ioo iop ior ipa ipb ipc ipe ipf ipi ipm ipo ipp ipr ir- ira irb irc ire irf iri irm iro irp irr m-f m-o m-r maa mab mac mae maf mai mam mao map mar mba mbb mbc mbe mbf mbi mbm mbo mbp mbr mc- mca mcb mcc mce mcf mci mcm mco mcp mcr mea meb mec mee mef mei mem meo mep mer mfa mfb mfc mfe mff mfi mfm mfo mfp mfr mi- mia mib mic mie mif mii mim mio mip mir mma mmb mmc mme mmf mmi mmm mmo mmp mmr moa mob moc moe mof moi mom moo mop mor mpa mpb mpc mpe mpf mpi mpm mpo mpp mpr mra mrb mrc mre mrf mri mrm mro mrp mrr o-i oaa oab oac oae oaf oai oam oao oap oar ob- oba obb obc obe obf obi obm obo obp obr oc- oca ocb occ ocf oci ocm oco ocp ocr oea oeb oec oee oef oei oem oeo oep oer of- ofa ofb ofc ofe off ofi ofm ofo ofp ofr oia oib oic oie oif oii oim oio oip oir om- oma omb omc ome omf omi omm omo omp omr oo- ooa oob ooc oof ooi oom ooo oop oor op- opa opb opc ope opf opi opm opo opp opr or- ora orb orc ore orf ori orm oro orp orr p-p paa pab pac pae paf pai pam pao pap par pba pbb pbc pbe pbf pbi pbm pbo pbp pbr pca pcb pcc pce pcf pci pcm pco pcp pcr pea peb pec pee pef pei pem peo pep per pfa pfb pfc pfe pff pfi pfm pfo pfp pfr pia pib pic pie pif pii pim pio pip pir pma pmb pmc pme pmf pmi pmm pmo pmp pmr poa pob poc poe pof poi pom poo pop por ppa ppb ppc ppe ppf ppi ppm ppo ppp ppr pra prb prc pre prf pri prm pro prp prr ra- raa rab rac rae raf rai ram rao rap rar rba rbb rbc rbe rbf rbi rbm rbo rbp rbr rca rcb rcc rce rcf rci rcm rco rcp rcr re- rea reb rec ree ref rei rem reo rep rer rfa rfb rfc rfe rff rfi rfm rfo rfp rfr ria rib ric rie rif rii rim rio rip rir rma rmb rmc rme rmf