-er -ic a-a a-b a-c a-i aaa aab aac aae aag aai aak aam aap aar ab- aba abb abc abe abg abi abk abm abp abr ac- aca acb acc ace acg aci ack acm acp acr aea aeb aec aee aeg aei aek aem aep aer ag- aga agb agc age agg agi agk agm agp agr ai- aia aib aic aie aig aii aik aim aip air aka akb akc ake akg aki akk akm akp akr ama amb amc ame amg ami amk amm amp amr ap- apa apb apc ape apg api apk apm app apr ar- ara arb arc are arg ari ark arm arp arr b-p baa bab bac bae bag bai bak bam bap bar bba bbb bbc bbe bbg bbi bbk bbm bbp bbr bca bcb bcc bce bcg bci bck bcm bcp bcr be- bea beb bec bee beg bei bek bem bep ber bga bgb bgc bge bgg bgi bgk bgm bgp bgr bi- bia bib bic bie big bii bik bim bip bir bka bkb bkc bke bkg bkk bkm bkp bkr bma bmb bmc bme bmg bmi bmk bmm bmp bmr bpa bpb bpc bpe bpg bpi bpm bpp bpr bra brb bre brg bri brk brm brp brr c-- caa cab cac cae cag cai cak cam cap car cba cbb cbc cbe cbg cbi cbk cbm cbp cbr cca ccb ccc cce ccg cci cck ccm ccp ccr ce- cea ceb cec cee ceg cei cek cem cep cer cga cgb cgc cge cgg cgi cgm cgp cgr ci- cia cib cic cie cig cii cik cim cip cir cka ckb ckc cki ckm cma cmb cmc cme cmg cmi cmk cmm cmp cmr cpa cpb cpc cpe cpg cpi cpk cpm cpp cpr cra crb crc cre crg cri crk crm crp crr eaa eab eac eae eag eai eak eam eap ear eba ebb ebc ebe ebg ebi ebk ebm ebp ebr ec- eca ecb ecc ece ecg eci eck ecm ecr eea eeb eec eee eeg eek eem eep eer ega egb egc ege egg egi egm egp egr eia eib eic eie eig eii eik eim eip eir eka ekb ekc eke ekg eki ekp ekr em- ema emb emc eme emg emi emk emm emp emr ep- epa epb epc epe epg epi epm epp epr era erb erc ere erg eri erk erm erp err g-p gaa gab gac gae gag gai gak gam gap gar gba gbc gbe gbg gbi gbk gbm gbp gbr gca gcb gcc gce gcg gci gck gcm gcp gcr ge- gea geb gec gee geg gei gek gem gep ger gga ggb ggc ggg ggi ggm ggp ggr gia gib gic gie gig gii gik gim gip gir gka gkb gkm gkp gma gmb gmc gme gmg gmi gmm gmp gmr gpa gpb gpc gpe gpg gpi gpk gpm gpp gpr gra grb grc gre grg gri grk grm grp grr ia- iaa iab iac iae iag iai iam iap iar iba ibb ibc ibe ibg ibi ibk ibm ibp ibr ica icb icc ice icg ici ick icm icp icr ie- iea iec iee ieg iei iek iem iep ier iga igb igc ige igg igi igk igm igp igr iia iib iic iie iii iim iip iir ika ikb ikc ike iki ikk ikr im- ima imb imc ime img imi imm imp ipa ipb ipc ipe ipg ipi ipm ipp ipr ir- ira irb irc ire irg iri irk irm irp irr ka- kaa kab kac kae kag kai kak kam kap kar kba kbb kbc kbe kbi kbk kbm kbp kbr kca kcb kcc kce kcg kci kck kcm kcp kcr ke- kea keb kec kee keg kei kek kem kep ker kga kgb kgc kgi kgm kgp kia kib kic kie kig kii kik kim kip kir kkb kkc kke kki kkk kkm kkp kkr kma kmb kmc kme kmg kmi kmk kmm kmp kpa kpc kpe kpi kpk kpm kpp kpr kra krc krg kri krk krp krr m-r maa mab mac mae mag mai mak mam map mar mba mbb mbc mbe mbg mbi mbk mbm mbp mbr mc- mca mcb mcc mce mcg mci mck mcm mcp mcr mea meb mec mee meg mei mek mem mep mer mga mgb mgc mge mgi mgk mgm mgp mgr mi- mia mib mic mie mig mii mik mim mip mir mka mkb mkc mke mkg mkk mkm mkp mkr mma mmb mmc mme mmg mmi mmk mmm mmp mmr mpa mpb mpc mpe mpg mpi mpk mpm mpp mpr mra mrb mrc mre mrg mri mrk mrm mrp mrr p-p paa pab pac pae pag pai pak pam pap par pba pbb pbc pbe pbg pbi pbk pbm pbp pbr pca pcb pcc pce pcg pci pck pcm pcp pcr pea peb pec pee peg pei pek pem pep per pga pgb pgc pge pgg pgi pgk pgm pgp pgr pia pib pic pie pig pii pik pim pip pir pka pkb pkc pke pkg pki pkm pkp pkr pma pmb pmc pme pmg pmi pmk pmm pmp pmr ppa ppb ppc ppe ppg ppi ppk ppm ppp ppr pra prb prc pre prg pri prk prm prp prr ra- raa rab rac rae rag rai rak ram rap rar rba rbb rbc rbe rbg rbi rbk rbm rbp rbr rca rcb rcc rce rcg rci rcm rcp rcr re- rea reb rec ree reg rei rek rem rep rer rga rgb rgc rge rgg rgi rgk rgp rgr ria rib ric rie rig rii rik rim rip rir rkb rkc rke rkg rkk rkm rkp rma rmb rmc rme rmg rmi rmm rmp rmr rpa rpb rpc rpe rpg rpi rpk rpm rpp rpr rra rrb rrc rrg rri rrk rrm rrp rrr