-al -er -ic a-a a-c a-i aaa aac aae aaf aag aai aal aar aas ac- aca acc ace acf acg aci acl acr acs aea aec aee aef aeg aei ael aer aes af- afa afc afe aff afg afi afl afr afs ag- aga agc age agf agg agi agl agr ags ai- aia aic aie aif aig aii ail air ais al- ala alc ale alf alg ali all alr als ar- ara arc are arf arg ari arl arr ars as- asa asc ase asf asg asi asl asr ass c-- caa cac cae caf cag cai cal car cas cca ccc cce ccf ccg cci ccl ccr ccs ce- cea cec cee cef ceg cei cel cer ces cfa cfc cfe cff cfg cfi cfl cfr cfs cga cgc cge cgg cgi cgl cgr cgs ci- cia cic cie cif cig cii cil cir cis cl- cla clc cle clf clg cli cll clr cls cra crc cre crf crg cri crl crr crs csa csc cse csf csg csi csl csr css eaa eac eae eaf eag eai eal ear eas ec- eca ecc ece ecf ecg eci ecl ecr ecs eea eec eee eef eeg eel eer ees ef- efa efc efe eff efg efi efl efr efs ega egc ege egf egg egi egl egr egs eia eic eie eif eig eii eil eir eis ela elc ele elf elg eli ell elr els era erc ere erf erg eri erl err ers es- esa esc ese esf esg esi esl esr ess faa fac fae faf fag fai fal far fas fca fcc fce fcf fcg fci fcl fcr fcs fea fec fee fef feg fei fel fer fes ffa ffc ffe fff ffg ffi ffl ffr ffs fga fgc fge fgf fgg fgi fgl fgr fgs fia fic fie fif fig fii fil fir fis fla flc fle flf flg fli fll flr fls fra frc fre frf frg fri frl frr frs fsa fsc fse fsf fsg fsi fsl fsr fss gaa gac gae gaf gag gai gal gar gas gca gcc gce gcf gcg gci gcl gcr gcs ge- gea gec gee gef geg gei gel ger ges gfa gfc gfe gff gfi gfl gfr gfs gga ggc ggg ggi ggr ggs gia gic gie gif gig gii gil gir gis gla glc gle glf glg gli gll glr gls gra grc gre grf grg gri grl grr grs gsa gsc gse gsf gsg gsi gsl gsr gss i-f ia- iaa iac iae iaf iag iai ial iar ias ica icc ice icf icg ici icl icr ics ie- iea iec iee ief ieg iei iel ier ies ifa ifc ife iff ifg ifi ifl ifr ifs iga igc ige igf igg igi igl igr igs iia iic iie iif iii iil iir iis il- ila ilc ile ilf ilg ili ill ilr ils ir- ira irc ire irf irg iri irl irr irs is- isa isc ise isf isg isi isl isr iss la- laa lac lae laf lag lai lal lar las lca lcc lce lcf lcg lci lcl lcr lcs lea lec lee lef leg lei lel ler les lfa lfc lfe lff lfg lfi lfl lfr lfs lga lgc lge lgf lgg lgi lgl lgr lgs lia lic lie lif lig lii lil lir lis lla llc lle llf llg lli lll llr lls lra lrc lrf lrg lri lrr lrs lsa lsc lse lsf lsg lsi lsl lsr lss ra- raa rac rae raf rag rai ral rar ras rca rcc rce rcf rcg rci rcl rcr rcs re- rea rec ree ref reg rei rel rer res rfa rfc rfe rff rfg rfi rfl rfr rfs rga rgc rge rgf rgg rgi rgr rgs ria ric rie rif rig rii ril rir ris rla rlc rle rlf rlg rli rll rlr rls rra rrc rrf rrg rri rrl rrr rrs rsa rsc rse rsf rsg rsi rsl rsr rss saa sac sae saf sag sai sal sar sas sca scc sce scf scg sci scl scr scs se- sea sec see sef seg sei sel ser ses sfa sfc sfe sff sfg sfi sfl sfr sfs sga sgc sge sgf sgg sgi sgl sgr sgs sia sic sie sif sig sii sil sir sis sla slc sle slf slg sli sll slr sls sr- sra src sre srf srg sri srl srr srs ss- ssa ssc sse ssf ssg ssi ssl ssr sss