-al -er -ic -ol a-a a-b a-c a-i a-t aaa aab aac aae aag aai aal aao aar aat ab- aba abb abc abe abg abi abl abo abr abt ac- aca acb acc ace acg aci acl aco acr act aea aeb aec aee aeg aei ael aeo aer aet ag- aga agb agc age agg agi agl ago agr agt ai- aia aib aic aie aig aii ail aio air ait al- ala alb alc ale alg ali all alo alr alt aoa aob aoc aoe aog aoi aol aoo aor aot ar- ara arb arc are arg ari arl aro arr art at- ata atb atc ate atg ati atl ato atr att baa bab bac bae bag bai bal bao bar bat bba bbb bbc bbe bbg bbi bbl bbo bbr bbt bca bcb bcc bce bcg bci bcl bco bcr bct be- bea beb bec bee beg bei bel beo ber bet bga bgb bgc bge bgg bgi bgl bgo bgr bgt bi- bia bib bic bie big bii bil bio bir bit bla blb blc ble blg bli bll blo blr blt boa bob boc boe bog boi bol boo bor bot bra brb bre brg bri brl bro brr brt bta btb btc bte btg bti btl bto btr btt c-- caa cab cac cae cag cai cal cao car cat cba cbb cbc cbe cbg cbi cbl cbo cbr cbt cca ccb ccc cce ccg cci ccl cco ccr cct ce- cea ceb cec cee ceg cei cel ceo cer cet cga cgb cgc cge cgg cgi cgl cgo cgr cgt ci- cia cib cic cie cig cii cil cio cir cit cl- cla clb clc cle clg cli cll clo clr clt co- coa cob coc coe cog coi col coo cor cot cra crb crc cre crg cri crl cro crr crt cta ctb ctc cte ctg cti ctl cto ctr ctt eaa eab eac eae eag eai eal eao ear eat eba ebb ebc ebe ebg ebi ebl ebo ebr ebt ec- eca ecb ecc ece ecg eci ecl eco ecr ect eea eeb eec eee eeg eel eeo eer eet ega egb egc ege egg egi egl ego egr egt eia eib eic eie eig eii eil eio eir eit ela elb elc ele elg eli ell elo elr elt eo- eoa eob eoc eoe eog eoi eol eoo eor eot era erb erc ere erg eri erl ero err ert eta etb etc ete etg eti etl eto etr ett gaa gab gac gae gag gai gal gao gar gat gba gbc gbe gbg gbi gbl gbo gbr gbt gca gcb gcc gce gcg gci gcl gco gcr gct ge- gea geb gec gee geg gei gel geo ger get gga ggb ggc ggg ggi ggo ggr ggt gia gib gic gie gig gii gil gio gir git gla glb glc gle glg gli gll glo glr glt goa gob goc goe gog goi gol goo gor got gra grb grc gre grg gri grl gro grr grt gta gtb gtc gte gtg gti gtl gto gtr gtt ia- iaa iab iac iae iag iai ial iao iar iat iba ibb ibc ibe ibg ibi ibl ibo ibr ibt ica icb icc ice icg ici icl ico icr ict ie- iea iec iee ieg iei iel ier iet iga igb igc ige igg igi igl igo igr igt iia iib iic iie iii iil iio iir iit il- ila ilb ilc ile ilg ili ill ilo ilr ilt io- ioa iob ioc ioe iog ioi iol ioo ior iot ir- ira irb irc ire irg iri irl iro irr irt ita itb itc ite itg iti itl ito itt la- laa lab lac lae lag lai lal lao lar lat lba lbb lbc lbe lbg lbi lbl lbo lbr lbt lca lcb lcc lce lcg lci lcl lco lcr lct lea leb lec lee leg lei lel leo ler let lga lgb lgc lge lgg lgi lgl lgo lgr lgt lia lib lic lie lig lii lil lio lir lit lla llb llc lle llg lli lll llo llr llt loa lob loc loe log loi lol loo lor lot lra lrb lrc lrg lri lro lrr lrt lta ltb ltc lte ltg lti ltl lto ltr ltt o-i oaa oab oac oae oag oai oal oao oar oat ob- oba obb obc obe obg obi obl obo obr obt oc- oca ocb occ ocg oci ocl oco ocr oct oea oeb oec oee oeg oei oel oeo oer oet oga ogc oge ogg ogi ogl ogo ogt oia oib oic oie oii oil oio oir oit ola olb olc ole olg oli oll olo olt oo- ooa oob ooc oog ooi ool ooo oor oot or- ora orb orc ore org ori orl oro orr ort ot- ota otb otc ote otg oti otl oto otr ott ra- raa rab rac rae rag rai ral rao rar rat rba rbb rbc rbe rbg rbi rbl rbo rbr rbt rca rcb rcc rce rcg rci rcl rco rcr rct re- rea reb rec ree reg rei rel reo rer ret rga rgb rgc rge rgg rgi rgo rgr rgt ria rib ric rie rig rii ril rio rir rit rla rlc rle rlg rli rll rlo rlr rlt roa rob roc roe rog roi rol roo ror rot rra rrb rrc rrg rri rrl rrr rrt rta rtb rtc rte rtg rti rtl rto rtr rtt taa tab tac tae tag tai tal tao tar tat tba tbb tbc tbe tbg tbi tbl tbo tbr tbt tca tcb tcc tce tcg tci tcl tco tcr tct te- tea teb tec tee teg tei tel teo ter tet tga tgb tgc tge tgg tgi tgl tgo tgr tgt tia tib tic tie tig tii til tio tir tit tla tlc tle tlg tli tll tlo tlr tlt to- toa tob toc toe tog toi tol too tor tot