-al -er -ic -ol a-a a-b a-c a-i a-t aaa aab aac aae aaf aag aai aal aao aar aat ab- aba abb abc abe abf abg abi abl abo abr abt ac- aca acb acc ace acf acg aci acl aco acr act aea aeb aec aee aef aeg aei ael aeo aer aet af- afa afb afc afe aff afg afi afl afo afr aft ag- aga agb agc age agf agg agi agl ago agr agt ai- aia aib aic aie aif aig aii ail aio air ait al- ala alb alc ale alf alg ali all alo alr alt aoa aob aoc aoe aof aog aoi aol aoo aor aot ar- ara arb arc are arf arg ari arl aro arr art at- ata atb atc ate atf atg ati atl ato atr att baa bab bac bae baf bag bai bal bao bar bat bba bbb bbc bbe bbf bbg bbi bbl bbo bbr bbt bca bcb bcc bce bcf bcg bci bcl bco bcr bct be- bea beb bec bee bef beg bei bel beo ber bet bfa bfb bfc bfe bff bfg bfi bfl bfo bfr bft bga bgb bgc bge bgf bgg bgi bgl bgo bgr bgt bi- bia bib bic bie bif big bii bil bio bir bit bla blb blc ble blf blg bli bll blo blr blt boa bob boc boe bof bog boi bol boo bor bot bra brb bre brf brg bri brl bro brr brt bta btb btc bte btf btg bti btl bto btr btt c-- caa cab cac cae caf cag cai cal cao car cat cba cbb cbc cbe cbf cbg cbi cbl cbo cbr cbt cca ccb ccc cce ccf ccg cci ccl cco ccr cct ce- cea ceb cec cee cef ceg cei cel ceo cer cet cfa cfb cfc cfe cff cfg cfi cfl cfo cfr cft cga cgb cgc cge cgg cgi cgl cgo cgr cgt ci- cia cib cic cie cif cig cii cil cio cir cit cl- cla clb clc cle clf clg cli cll clo clr clt co- coa cob coc coe cof cog coi col coo cor cot cra crb crc cre crf crg cri crl cro crr crt cta ctb ctc cte ctf ctg cti ctl cto ctr ctt eaa eab eac eae eaf eag eai eal eao ear eat eba ebb ebc ebe ebf ebg ebi ebl ebo ebr ebt ec- eca ecb ecc ece ecf ecg eci ecl eco ecr ect eea eeb eec eee eef eeg eel eeo eer eet ef- efa efb efc efe eff efg efi efl efo efr eft ega egb egc ege egf egg egi egl ego egr egt eia eib eic eie eif eig eii eil eio eir eit ela elb elc ele elf elg eli ell elo elr elt eo- eoa eob eoc eoe eof eog eoi eol eoo eor eot era erb erc ere erf erg eri erl ero err ert eta etb etc ete etf etg eti etl eto etr ett faa fab fac fae faf fag fai fal fao far fat fba fbb fbc fbe fbf fbg fbi fbl fbo fbr fbt fca fcb fcc fce fcf fcg fci fcl fco fcr fct fea feb fec fee fef feg fei fel feo fer fet ffa ffc ffe fff ffg ffi ffl ffo ffr fft fga fgb fgc fge fgf fgg fgi fgl fgr fgt fia fib fic fie fif fig fii fil fir fit fla flb flc fle flf flg fli fll flo flr flt foa fob foc foe fof fog foi fol foo for fot fra frb frc fre frf frg fri frl fro frr frt fta ftb ftc fte ftf ftg fti ftl fto ftr ftt gaa gab gac gae gaf gag gai gal gao gar gat gba gbc gbe gbf gbg gbi gbl gbo gbr gbt gca gcb gcc gce gcf gcg gci gcl gco gcr gct ge- gea geb gec gee gef geg gei gel geo ger get gfa gfb gfc gfe gff gfi gfl gfo gfr gft gga ggb ggc ggg ggi ggo ggr ggt gia gib gic gie gif gig gii gil gio gir git gla glb glc gle glf glg gli gll glo glr glt goa gob goc goe gof gog goi gol goo gor got gra grb grc gre grf grg gri grl gro grr grt gta gtb gtc gte gtf gtg gti gtl gto gtr gtt i-f ia- iaa iab iac iae iaf iag iai ial iao iar iat iba ibb ibc ibe ibf ibg ibi ibl ibo ibr ibt ica icb icc ice icf icg ici icl ico icr ict ie- iea iec iee ief ieg iei iel ier iet ifa ifb ifc ife iff ifg ifi ifl ifo ifr ift iga igb igc ige igf igg igi igl igo igr igt iia iib iic iie iif iii iil iio iir iit il- ila ilb ilc ile ilf ilg ili ill ilo ilr ilt io- ioa iob ioc ioe iof iog ioi iol ioo ior iot ir- ira irb irc ire irf irg iri irl iro irr irt ita itb itc ite itf itg iti itl ito itt la- laa lab lac lae laf lag lai lal lao lar lat lba lbb lbc lbe lbf lbg lbi lbl lbo lbr lbt lca lcb lcc lce lcf lcg lci lcl lco lcr lct lea leb lec lee lef leg lei lel leo ler let lfa lfb lfc lfe lff lfg lfi lfl lfo lfr lft lga lgb lgc lge lgf lgg lgi lgl lgo lgr lgt lia lib lic lie lif lig lii lil lio lir lit lla llb llc lle llf llg lli lll llo llr llt loa lob loc loe lof log loi lol loo lor lot lra lrb lrc lrf lrg lri lro lrr lrt lta ltb ltc lte ltf ltg lti ltl lto ltr ltt o-i oaa oab oac oae oaf oag oai oal oao oar oat ob- oba