-er -ic a-a a-b a-c a-i a-t aaa aab aac aae aaf aag aai aan aar aat ab- aba abb abc abe abf abg abi abn abr abt ac- aca acb acc ace acf acg aci acn acr act aea aeb aec aee aef aeg aei aen aer aet af- afa afb afc afe aff afg afi afn afr aft ag- aga agb agc age agf agg agi agn agr agt ai- aia aib aic aie aif aig aii ain air ait an- ana anb anc ane anf ang ani ann anr ant ar- ara arb arc are arf arg ari arn arr art at- ata atb atc ate atf atg ati atn atr att baa bab bac bae baf bag bai ban bar bat bba bbb bbc bbe bbf bbg bbi bbn bbr bbt bca bcb bcc bce bcf bcg bci bcn bcr bct be- bea beb bec bee bef beg bei ben ber bet bfa bfb bfc bfe bff bfg bfi bfn bfr bft bga bgb bgc bge bgf bgg bgi bgn bgr bgt bi- bia bib bic bie bif big bii bin bir bit bna bnb bnc bne bnf bng bni bnn bnr bnt bra brb bre brf brg bri brn brr brt bta btb btc bte btf btg bti btn btr btt c-- caa cab cac cae caf cag cai can car cat cba cbb cbc cbe cbf cbg cbi cbn cbr cbt cca ccb ccc cce ccf ccg cci ccn ccr cct ce- cea ceb cec cee cef ceg cei cen cer cet cfa cfb cfc cfe cff cfg cfi cfn cfr cft cga cgb cgc cge cgg cgi cgn cgr cgt ci- cia cib cic cie cif cig cii cin cir cit cn- cna cnb cnc cne cnf cng cni cnn cnr cnt cra crb crc cre crf crg cri crn crr crt cta ctb ctc cte ctf ctg cti ctn ctr ctt eaa eab eac eae eaf eag eai ean ear eat eba ebb ebc ebe ebf ebg ebi ebn ebr ebt ec- eca ecb ecc ece ecf ecg eci ecn ecr ect eea eeb eec eee eef eeg een eer eet ef- efa efb efc efe eff efg efi efr eft ega egb egc ege egf egg egi egn egr egt eia eib eic eie eif eig eii ein eir eit en- ena enb enc ene enf eng eni enn enr ent era erb erc ere erf erg eri ern err ert eta etb etc ete etf etg eti etn etr ett faa fab fac fae faf fag fai fan far fat fba fbb fbc fbe fbf fbg fbi fbn fbr fbt fca fcb fcc fce fcf fcg fci fcn fcr fct fea feb fec fee fef feg fei fen fer fet ffa ffc ffe fff ffg ffi ffn ffr fft fga fgb fgc fge fgf fgg fgi fgn fgr fgt fia fib fic fie fif fig fii fin fir fit fna fnb fnc fne fnf fng fni fnn fnr fnt fra frb frc fre frf frg fri frn frr frt fta ftb ftc fte ftf ftg fti ftn ftr ftt gaa gab gac gae gaf gag gai gan gar gat gba gbc gbe gbf gbg gbi gbn gbr gbt gca gcb gcc gce gcf gcg gci gcn gcr gct ge- gea geb gec gee gef geg gei gen ger get gfa gfb gfc gfe gff gfi gfr gft gga ggb ggc ggg ggi ggn ggr ggt gia gib gic gie gif gig gii gin gir git gna gnb gnc gne gnf gni gnn gnr gnt gra grb grc gre grf grg gri grn grr grt gta gtb gtc gte gtf gtg gti gtn gtr gtt i-f ia- iaa iab iac iae iaf iag iai ian iar iat iba ibb ibc ibe ibf ibg ibi ibn ibr ibt ica icb icc ice icf icg ici icn icr ict ie- iea iec iee ief ieg iei ien ier iet ifa ifb ifc ife iff ifg ifi ifn ifr ift iga igb igc ige igf igg igi ign igr igt iia iib iic iie iif iii iin iir iit in- ina inb inc ine inf ing ini inn inr int ir- ira irb irc ire irf irg iri irn irr irt ita itb itc ite itf itg iti itn itt n-i naa nab nac nae naf nag nai nan nar nat nba nbb nbc nbe nbf nbg nbi nbn nbr nbt nca ncb ncc nce ncf ncg nci ncn ncr nct ne- nea neb nec nee nef neg nei nen ner net nfa nfb nfc nfe nff nfi nfn nfr nft nga ngb ngc nge ngf ngg ngi ngn ngt nia nib nic nie nif nig nii nin nir nit nna nnb nnc nne nnf nng nni nnn nnt nra nrb nrc nre nrf nrg nri nrn nrr nrt nta ntb ntc nte ntf ntg nti ntn ntr ntt ra- raa rab rac rae raf rag rai ran rar rat rba rbb rbc rbe rbf rbg rbi rbn rbr rbt rca rcb rcc rce rcf rcg rci rcn rcr rct re- rea reb rec ree ref reg rei ren rer ret rfa rfb rfc rfe rff rfg rfi rfn rfr rft rga rgb rgc rge rgf rgg rgi rgn rgr rgt ria rib ric rie rif rig rii rin rir rit rna rnb rnc rng rni rnn rnr rnt rra rrb rrc rrf rrg rri rrn rrr rrt rta rtb rtc rte rtf rtg rti rtn rtr rtt taa tab tac tae taf tag tai tan tar tat tba tbb tbc tbe tbf tbg tbi tbn tbr tbt tca tcb tcc tce tcf tcg tci tcn tcr tct te- tea teb tec tee tef teg tei ten ter tet tfa tfb tfc tfe tff tfg tfi tfn tfr tft tga tgb tgc tge tgf tgg tgi tgn tgr tgt tia tib tic tie tif tig tii tin tir tit tna tnb tnc tne tnf tng tni tnn tnr tnt tra trb trc tre trf