-al -er -ol a-a a-b a-c a-t aaa aab aac aae aag aal aao aar aat ab- aba abb abc abe abg abl abo abr abt ac- aca acb acc ace acg acl aco acr act aea aeb aec aee aeg ael aeo aer aet ag- aga agb agc age agg agl ago agr agt al- ala alb alc ale alg all alo alr alt aoa aob aoc aoe aog aol aoo aor aot ar- ara arb arc are arg arl aro arr art at- ata atb atc ate atg atl ato atr att baa bab bac bae bag bal bao bar bat bba bbb bbc bbe bbg bbl bbo bbr bbt bca bcb bcc bce bcg bcl bco bcr bct be- bea beb bec bee beg bel beo ber bet bga bgb bgc bge bgg bgl bgo bgr bgt bla blb blc ble blg bll blo blr blt boa bob boc boe bog bol boo bor bot bra brb bre brg brl bro brr brt bta btb btc bte btg btl bto btr btt c-- caa cab cac cae cag cal cao car cat cba cbb cbc cbe cbg cbl cbo cbr cbt cca ccb ccc cce ccg ccl cco ccr cct ce- cea ceb cec cee ceg cel ceo cer cet cga cgb cgc cge cgg cgl cgo cgr cgt cl- cla clb clc cle clg cll clo clr clt co- coa cob coc coe cog col coo cor cot cra crb crc cre crg crl cro crr crt cta ctb ctc cte ctg ctl cto ctr ctt eaa eab eac eae eag eal eao ear eat eba ebb ebc ebe ebg ebl ebo ebr ebt ec- eca ecb ecc ece ecg ecl eco ecr ect eea eeb eec eee eeg eel eeo eer eet ega egb egc ege egg egl ego egr egt ela elb elc ele elg ell elo elr elt eo- eoa eob eoc eoe eog eol eoo eor eot era erb erc ere erg erl ero err ert eta etb etc ete etg etl eto etr ett gaa gab gac gae gag gal gao gar gat gba gbc gbe gbg gbl gbo gbr gbt gca gcb gcc gce gcg gcl gco gcr gct ge- gea geb gec gee geg gel geo ger get gga ggb ggc ggg ggo ggr ggt gla glb glc gle glg gll glo glr glt goa gob goc goe gog gol goo gor got gra grb grc gre grg grl gro grr grt gta gtb gtc gte gtg gtl gto gtr gtt la- laa lab lac lae lag lal lao lar lat lba lbb lbc lbe lbg lbl lbo lbr lbt lca lcb lcc lce lcg lcl lco lcr lct lea leb lec lee leg lel leo ler let lga lgb lgc lge lgg lgl lgo lgr lgt lla llb llc lle llg lll llo llr llt loa lob loc loe log lol loo lor lot lra lrb lrc lrg lro lrr lrt lta ltb ltc lte ltg ltl lto ltr ltt oaa oab oac oae oag oal oao oar oat ob- oba obb obc obe obg obl obo obr obt oc- oca ocb occ ocg ocl oco ocr oct oea oeb oec oee oeg oel oeo oer oet oga ogc oge ogg ogl ogo ogt ola olb olc ole olg oll olo olt oo- ooa oob ooc oog ool ooo oor oot or- ora orb orc ore org orl oro orr ort ot- ota otb otc ote otg otl oto otr ott ra- raa rab rac rae rag ral rao rar rat rba rbb rbc rbe rbg rbl rbo rbr rbt rca rcb rcc rce rcg rcl rco rcr rct re- rea reb rec ree reg rel reo rer ret rga rgb rgc rge rgg rgo rgr rgt rla rlc rle rlg rll rlo rlr rlt roa rob roc roe rog rol roo ror rot rra rrb rrc rrg rrl rrr rrt rta rtb rtc rte rtg rtl rto rtr rtt taa tab tac tae tag tal tao tar tat tba tbb tbc tbe tbg tbl tbo tbr tbt tca tcb tcc tce tcg tcl tco tcr tct te- tea teb tec tee teg tel teo ter tet tga tgb tgc tge tgg tgl tgo tgr tgt tla tlc tle tlg tll tlo tlr tlt to- toa tob toc toe tog tol too tor tot tra trb trc tre trg trl tro trr trt tta ttb ttc tte ttg ttl tto ttr ttt