-al -ol a-a a-b a-c a-t aaa aab aac aad aae aag aal aao aat ab- aba abb abc abd abe abg abl abo abt ac- aca acb acc acd ace acg acl aco act ad- ada adb adc add ade adg adl ado adt aea aeb aec aed aee aeg ael aeo aet ag- aga agb agc agd age agg agl ago agt al- ala alb alc ald ale alg all alo alt aoa aob aoc aod aoe aog aol aoo aot at- ata atb atc atd ate atg atl ato att baa bab bac bad bae bag bal bao bat bba bbb bbc bbd bbe bbg bbl bbo bbt bca bcb bcc bcd bce bcg bcl bco bct bda bdb bdc bdd bde bdg bdl bdo bdt be- bea beb bec bed bee beg bel beo bet bga bgb bgc bgd bge bgg bgl bgo bgt bla blb blc bld ble blg bll blo blt boa bob boc bod boe bog bol boo bot bta btb btc btd bte btg btl bto btt c-- caa cab cac cad cae cag cal cao cat cba cbb cbc cbd cbe cbg cbl cbo cbt cca ccb ccc ccd cce ccg ccl cco cct cda cdb cdc cdd cde cdg cdl cdo cdt ce- cea ceb cec ced cee ceg cel ceo cet cga cgb cgc cgd cge cgg cgl cgo cgt cl- cla clb clc cld cle clg cll clo clt co- coa cob coc cod coe cog col coo cot cta ctb ctc ctd cte ctg ctl cto ctt daa dab dac dad dae dag dal dao dat dba dbb dbc dbd dbe dbg dbl dbo dbt dca dcb dcc dcd dce dcg dcl dco dct dda ddb ddc ddd dde ddg ddl ddo ddt de- dea deb dec ded dee deg del deo det dga dgc dgd dge dgg dgl dgt dl- dla dlb dlc dld dle dlg dll dlo dlt doa dob doc dod doe dog dol doo dot dta dtb dtc dtd dte dtg dtl dto dtt eaa eab eac ead eae eag eal eao eat eba ebb ebc ebd ebe ebg ebl ebo ebt ec- eca ecb ecc ecd ece ecg ecl eco ect ed- eda edb edc edd ede edg edl edo edt eea eeb eec eed eee eeg eel eeo eet ega egb egc egd ege egg egl ego egt ela elb elc eld ele elg ell elo elt eo- eoa eob eoc eod eoe eog eol eoo eot eta etb etc etd ete etg etl eto ett g-d gaa gab gac gad gae gag gal gao gat gba gbc gbd gbe gbg gbl gbo gbt gca gcb gcc gcd gce gcg gcl gco gct gda gdb gdc gdd gde gdl gdo gdt ge- gea geb gec ged gee geg gel geo get gga ggb ggc ggd ggg ggo ggt gla glb glc gld gle glg gll glo glt goa gob goc god goe gog gol goo got gta gtb gtc gtd gte gtg gtl gto gtt la- laa lab lac lad lae lag lal lao lat lba lbb lbc lbd lbe lbg lbl lbo lbt lca lcb lcc lcd lce lcg lcl lco lct lda ldb ldc ldd lde ldg ldl ldo ldt lea leb lec led lee leg lel leo let lga lgb lgc lgd lge lgg lgl lgo lgt lla llb llc lld lle llg lll llo llt loa lob loc lod loe log lol loo lot lta ltb ltc ltd lte ltg ltl lto ltt oaa oab oac oad oae oag oal oao oat ob- oba obb obc obd obe obg obl obo obt oc- oca ocb occ ocd ocg ocl oco oct oda odb odc odd ode odg odl odo odt oea oeb oec oed oee oeg oel oeo oet oga ogc ogd oge ogg ogl ogo ogt ola olb olc old ole olg oll olo olt oo- ooa oob ooc ood oog ool ooo oot ot- ota otb otc otd ote otg otl oto ott taa tab tac tad tae tag tal tao tat tba tbb tbc tbd tbe tbg tbl tbo tbt tca tcb tcc tcd tce tcg tcl tco tct tda tdb tdc tdd tde tdg tdl tdo tdt te- tea teb tec ted tee teg tel teo tet tga tgb tgc tge tgg tgl tgo tgt tla tlc tld tle tlg tll tlo tlt to- toa tob toc tod toe tog tol too tot tta ttb ttc ttd tte ttg ttl tto ttt