-al -er -ic -ol a-a a-b a-c a-i a-t aaa aab aac aae aag aai aak aal aao aar aat ab- aba abb abc abe abg abi abk abl abo abr abt ac- aca acb acc ace acg aci ack acl aco acr act aea aeb aec aee aeg aei aek ael aeo aer aet ag- aga agb agc age agg agi agk agl ago agr agt ai- aia aib aic aie aig aii aik ail aio air ait aka akb akc ake akg aki akk akl ako akr al- ala alb alc ale alg ali alk all alo alr alt aoa aob aoc aoe aog aoi aok aol aoo aor aot ar- ara arb arc are arg ari ark arl aro arr art at- ata atb atc ate atg ati atl ato atr att baa bab bac bae bag bai bak bal bao bar bat bba bbb bbc bbe bbg bbi bbk bbl bbo bbr bbt bca bcb bcc bce bcg bci bck bcl bco bcr bct be- bea beb bec bee beg bei bek bel beo ber bet bga bgb bgc bge bgg bgi bgk bgl bgo bgr bgt bi- bia bib bic bie big bii bik bil bio bir bit bka bkb bkc bke bkg bkk bkl bko bkr bkt bla blb blc ble blg bli blk bll blo blr blt boa bob boc boe bog boi bok bol boo bor bot bra brb bre brg bri brk brl bro brr brt bta btb btc bte btg bti btk btl bto btr btt c-- caa cab cac cae cag cai cak cal cao car cat cba cbb cbc cbe cbg cbi cbk cbl cbo cbr cbt cca ccb ccc cce ccg cci cck ccl cco ccr cct ce- cea ceb cec cee ceg cei cek cel ceo cer cet cga cgb cgc cge cgg cgi cgl cgo cgr cgt ci- cia cib cic cie cig cii cik cil cio cir cit cka ckb ckc cki cko ckt cl- cla clb clc cle clg cli clk cll clo clr clt co- coa cob coc coe cog coi cok col coo cor cot cra crb crc cre crg cri crk crl cro crr crt cta ctb ctc cte ctg cti ctk ctl cto ctr ctt eaa eab eac eae eag eai eak eal eao ear eat eba ebb ebc ebe ebg ebi ebk ebl ebo ebr ebt ec- eca ecb ecc ece ecg eci eck ecl eco ecr ect eea eeb eec eee eeg eek eel eeo eer eet ega egb egc ege egg egi egl ego egr egt eia eib eic eie eig eii eik eil eio eir eit eka ekb ekc eke ekg eki ekl eko ekr ekt ela elb elc ele elg eli elk ell elo elr elt eo- eoa eob eoc eoe eog eoi eok eol eoo eor eot era erb erc ere erg eri erk erl ero err ert eta etb etc ete etg eti etk etl eto etr ett gaa gab gac gae gag gai gak gal gao gar gat gba gbc gbe gbg gbi gbk gbl gbo gbr gbt gca gcb gcc gce gcg gci gck gcl gco gcr gct ge- gea geb gec gee geg gei gek gel geo ger get gga ggb ggc ggg ggi ggo ggr ggt gia gib gic gie gig gii gik gil gio gir git gka gkb gko gkt gla glb glc gle glg gli glk gll glo glr glt goa gob goc goe gog goi gok gol goo gor got gra grb grc gre grg gri grk grl gro grr grt gta gtb gtc gte gtg gti gtk gtl gto gtr gtt ia- iaa iab iac iae iag iai ial iao iar iat iba ibb ibc ibe ibg ibi ibk ibl ibo ibr ibt ica icb icc ice icg ici ick icl ico icr ict ie- iea iec iee ieg iei iek iel ier iet iga igb igc ige igg igi igk igl igo igr igt iia iib iic iie iii iil iio iir iit ika ikb ikc ike iki ikk ikl iko ikr ikt il- ila ilb ilc ile ilg ili ilk ill ilo ilr ilt io- ioa iob ioc ioe iog ioi iol ioo ior iot ir- ira irb irc ire irg iri irk irl iro irr irt ita itb itc ite itg iti itk itl ito itt k-t ka- kaa kab kac kae kag kai kak kal kao kar kat kba kbb kbc kbe kbi kbk kbl kbo kbr kca kcb kcc kce kcg kci kck kcl kcr kct ke- kea keb kec kee keg kei kek kel keo ker ket kga kgb kgc kgi kgl kgo kia kib kic kie kig kii kik kil kio kir kit kkb kkc kke kki kkk kkl kkr kkt kl- kla klb klc klg kli klo klr klt koa kob koc koe kog koi kok kol koo kor kot kra krc krg kri krk krl kro krr krt kta ktb ktc kte ktg ktk ktl kto ktr ktt la- laa lab lac lae lag lai lak lal lao lar lat lba lbb lbc lbe lbg lbi lbk lbl lbo lbr lbt lca lcb lcc lce lcg lci lck lcl lco lcr lct lea leb lec lee leg lei lek lel leo ler let lga lgb lgc lge lgg lgi lgk lgl lgo lgr lgt lia lib lic lie lig lii lik lil lio lir lit lka lkb lkg lkl lkr lkt lla llb llc lle llg lli llk lll llo llr llt loa lob loc loe log loi lok lol loo lor lot lra lrb lrc lrg lri lrk lro lrr lrt lta ltb ltc lte ltg lti ltk ltl lto ltr ltt o-i oaa oab oac oae oag oai oak oal oao oar oat ob- oba obb obc obe obg obi obk obl obo obr obt oc- oca ocb occ ocg oci ock ocl oco ocr oct oea oeb oec oee oeg oei oel oeo oer oet oga ogc oge ogg ogi ogl ogo