-er -ic a-a a-b a-c a-i aaa aab aac aae aag aai aak aan aap aar ab- aba abb abc abe abg abi abk abn abp abr ac- aca acb acc ace acg aci ack acn acp acr aea aeb aec aee aeg aei aek aen aep aer ag- aga agb agc age agg agi agk agn agp agr ai- aia aib aic aie aig aii aik ain aip air aka akb akc ake akg aki akk akn akp akr an- ana anb anc ane ang ani ank ann anp anr ap- apa apb apc ape apg api apk apn app apr ar- ara arb arc are arg ari ark arn arp arr b-p baa bab bac bae bag bai bak ban bap bar bba bbb bbc bbe bbg bbi bbk bbn bbp bbr bca bcb bcc bce bcg bci bck bcn bcp bcr be- bea beb bec bee beg bei bek ben bep ber bga bgb bgc bge bgg bgi bgk bgn bgp bgr bi- bia bib bic bie big bii bik bin bip bir bka bkb bkc bke bkg bkk bkn bkp bkr bna bnb bnc bne bng bni bnk bnn bnp bnr bpa bpb bpc bpe bpg bpi bpn bpp bpr bra brb bre brg bri brk brn brp brr c-- caa cab cac cae cag cai cak can cap car cba cbb cbc cbe cbg cbi cbk cbn cbp cbr cca ccb ccc cce ccg cci cck ccn ccp ccr ce- cea ceb cec cee ceg cei cek cen cep cer cga cgb cgc cge cgg cgi cgn cgp cgr ci- cia cib cic cie cig cii cik cin cip cir cka ckb ckc cki cn- cna cnb cnc cne cng cni cnn cnp cnr cpa cpb cpc cpe cpg cpi cpk cpn cpp cpr cra crb crc cre crg cri crk crn crp crr eaa eab eac eae eag eai eak ean eap ear eba ebb ebc ebe ebg ebi ebk ebn ebp ebr ec- eca ecb ecc ece ecg eci eck ecn ecr eea eeb eec eee eeg eek een eep eer ega egb egc ege egg egi egn egp egr eia eib eic eie eig eii eik ein eip eir eka ekb ekc eke ekg eki ekp ekr en- ena enb enc ene eng eni enk enn enp enr ep- epa epb epc epe epg epi epn epp epr era erb erc ere erg eri erk ern erp err g-p gaa gab gac gae gag gai gak gan gap gar gba gbc gbe gbg gbi gbk gbn gbp gbr gca gcb gcc gce gcg gci gck gcn gcp gcr ge- gea geb gec gee geg gei gek gen gep ger gga ggb ggc ggg ggi ggn ggp ggr gia gib gic gie gig gii gik gin gip gir gka gkb gkn gkp gna gnb gnc gne gni gnn gnp gnr gpa gpb gpc gpe gpg gpi gpk gpn gpp gpr gra grb grc gre grg gri grk grn grp grr ia- iaa iab iac iae iag iai ian iap iar iba ibb ibc ibe ibg ibi ibk ibn ibp ibr ica icb icc ice icg ici ick icn icp icr ie- iea iec iee ieg iei iek ien iep ier iga igb igc ige igg igi igk ign igp igr iia iib iic iie iii iin iip iir ika ikb ikc ike iki ikk ikr in- ina inb inc ine ing ini ink inn inp inr ipa ipb ipc ipe ipg ipi ipn ipp ipr ir- ira irb irc ire irg iri irk irn irp irr ka- kaa kab kac kae kag kai kak kan kap kar kba kbb kbc kbe kbi kbk kbn kbp kbr kca kcb kcc kce kcg kci kck kcn kcp kcr ke- kea keb kec kee keg kei kek ken kep ker kga kgb kgc kgi kgp kia kib kic kie kig kii kik kin kip kir kkb kkc kke kki kkk kkn kkp kkr kn- kna knc kne kng kni knk knn knp knr kpa kpc kpe kpi kpk kpn kpp kpr kra krc krg kri krk krn krp krr n-i naa nab nac nae nag nai nak nan nap nar nba nbb nbc nbe nbg nbi nbk nbn nbp nbr nca ncb ncc nce ncg nci nck ncn ncp ncr ne- nea neb nec nee neg nei nek nen nep ner nga ngb ngc nge ngg ngi ngk ngn ngp nia nib nic nie nig nii nik nin nip nir nka nkc nke nki nkk nkn nkp nkr nna nnb nnc nne nng nni nnk nnn nnp npa npb npc npe npg npi npn npp npr nra nrb nrc nre nrg nri nrk nrn nrp nrr p-p paa pab pac pae pag pai pak pan pap par pba pbb pbc pbe pbg pbi pbk pbn pbp pbr pca pcb pcc pce pcg pci pck pcn pcp pcr pea peb pec pee peg pei pek pen pep per pga pgb pgc pge pgg pgi pgk pgn pgp pgr pia pib pic pie pig pii pik pin pip pir pka pkb pkc pke pkg pki pkn pkp pkr pn- pna pnb pnc pne png pni pnk pnn pnp pnr ppa ppb ppc ppe ppg ppi ppk ppn ppp ppr pra prb prc pre prg pri prk prn prp prr ra- raa rab rac rae rag rai rak ran rap rar rba rbb rbc rbe rbg rbi rbk rbn rbp rbr rca rcb rcc rce rcg rci rcn rcp rcr re- rea reb rec ree reg rei rek ren rep rer rga rgb rgc rge rgg rgi rgk rgn rgp rgr ria rib ric rie rig rii rik rin rip rir rkb rkc rke rkg rkk rkp rna rnb rnc rng rni rnn rnp rnr rpa rpb rpc rpe rpg rpi rpk rpn rpp rpr rra rrb rrc rrg rri rrk rrn rrp rrr