-al -ic -ol a-a a-b a-c a-i a-t aaa aab aac aag aai aal aao aar aat ab- aba abb abc abg abi abl abo abr abt ac- aca acb acc acg aci acl aco acr act ag- aga agb agc agg agi agl ago agr agt ai- aia aib aic aig aii ail aio air ait al- ala alb alc alg ali all alo alr alt aoa aob aoc aog aoi aol aoo aor aot ar- ara arb arc arg ari arl aro arr art at- ata atb atc atg ati atl ato atr att baa bab bac bag bai bal bao bar bat bba bbb bbc bbg bbi bbl bbo bbr bbt bca bcb bcc bcg bci bcl bco bcr bct bga bgb bgc bgg bgi bgl bgo bgr bgt bi- bia bib bic big bii bil bio bir bit bla blb blc blg bli bll blo blr blt boa bob boc bog boi bol boo bor bot bra brb brg bri brl bro brr brt bta btb btc btg bti btl bto btr btt c-- caa cab cac cag cai cal cao car cat cba cbb cbc cbg cbi cbl cbo cbr cbt cca ccb ccc ccg cci ccl cco ccr cct cga cgb cgc cgg cgi cgl cgo cgr cgt ci- cia cib cic cig cii cil cio cir cit cl- cla clb clc clg cli cll clo clr clt co- coa cob coc cog coi col coo cor cot cra crb crc crg cri crl cro crr crt cta ctb ctc ctg cti ctl cto ctr ctt gaa gab gac gag gai gal gao gar gat gba gbc gbg gbi gbl gbo gbr gbt gca gcb gcc gcg gci gcl gco gcr gct gga ggb ggc ggg ggi ggo ggr ggt gia gib gic gig gii gil gio gir git gla glb glc glg gli gll glo glr glt goa gob goc gog goi gol goo gor got gra grb grc grg gri grl gro grr grt gta gtb gtc gtg gti gtl gto gtr gtt ia- iaa iab iac iag iai ial iao iar iat iba ibb ibc ibg ibi ibl ibo ibr ibt ica icb icc icg ici icl ico icr ict iga igb igc igg igi igl igo igr igt iia iib iic iii iil iio iir iit il- ila ilb ilc ilg ili ill ilo ilr ilt io- ioa iob ioc iog ioi iol ioo ior iot ir- ira irb irc irg iri irl iro irr irt ita itb itc itg iti itl ito itt la- laa lab lac lag lai lal lao lar lat lba lbb lbc lbg lbi lbl lbo lbr lbt lca lcb lcc lcg lci lcl lco lcr lct lga lgb lgc lgg lgi lgl lgo lgr lgt lia lib lic lig lii lil lio lir lit lla llb llc llg lli lll llo llr llt loa lob loc log loi lol loo lor lot lra lrb lrc lrg lri lro lrr lrt lta ltb ltc ltg lti ltl lto ltr ltt o-i oaa oab oac oag oai oal oao oar oat ob- oba obb obc obg obi obl obo obr obt oc- oca ocb occ ocg oci ocl oco ocr oct oga ogc ogg ogi ogl ogo ogt oia oib oic oii oil oio oir oit ola olb olc olg oli oll olo olt oo- ooa oob ooc oog ooi ool ooo oor oot or- ora orb orc org ori orl oro orr ort ot- ota otb otc otg oti otl oto otr ott ra- raa rab rac rag rai ral rao rar rat rba rbb rbc rbg rbi rbl rbo rbr rbt rca rcb rcc rcg rci rcl rco rcr rct rga rgb rgc rgg rgi rgo rgr rgt ria rib ric rig rii ril rio rir rit rla rlc rlg rli rll rlo rlr rlt roa rob roc rog roi rol roo ror rot rra rrb rrc rrg rri rrl rrr rrt rta rtb rtc rtg rti rtl rto rtr rtt taa tab tac tag tai tal tao tar tat tba tbb tbc tbg tbi tbl tbo tbr tbt tca tcb tcc tcg tci tcl tco tcr tct tga tgb tgc tgg tgi tgl tgo tgr tgt tia tib tic tig tii til tio tir tit tla tlc tlg tli tll tlo tlr tlt to- toa tob toc tog toi tol too tor tot tra trb trc trg tri trl tro trr trt tta ttb ttc ttg tti ttl tto ttr ttt