-al -ol a-a a-b aaa aab aad aag aal aao aax ab- aba abb abd abg abl abo abx ad- ada adb add adg adl ado adx ag- aga agb agd agg agl ago agx al- ala alb ald alg all alo alx aoa aob aod aog aol aoo aox ax- axa axl axo axx baa bab bad bag bal bao bax bba bbb bbd bbg bbl bbo bbx bda bdb bdd bdg bdl bdo bdx bga bgb bgd bgg bgl bgo bgx bla blb bld blg bll blo blx boa bob bod bog bol boo box bxb bxd bxl bxo bxx daa dab dad dag dal dao dax dba dbb dbd dbg dbl dbo dbx dda ddb ddd ddg ddl ddo ddx dga dgd dgg dgl dl- dla dlb dld dlg dll dlo dlx doa dob dod dog dol doo dox dxd dxl dxo dxx g-d gaa gab gad gag gal gao gba gbd gbg gbl gbo gbx gda gdb gdd gdl gdo gdx gga ggb ggd ggg ggo gla glb gld glg gll glo glx goa gob god gog gol goo gox gxa gxl la- laa lab lad lag lal lao lax lba lbb lbd lbg lbl lbo lbx lda ldb ldd ldg ldl ldo lga lgb lgd lgg lgl lgo lla llb lld llg lll llo loa lob lod log lol loo lox lxd lxo lxx oaa oab oad oag oal oao oax ob- oba obb obd obg obl obo obx oda odb odd odg odl odo oga ogd ogg ogl ogo ogx ola olb old olg oll olo oo- ooa oob ood oog ool ooo oox ox- oxa oxb oxo oxx xaa xad xag xal xbl xbx xda xdb xgl xla xlb xld xlg xoa xod xog xoo xox xxl xxo xxx