-al -er -ol a-a a-b aaa aab aae aag aak aal aao aar ab- aba abb abe abg abk abl abo abr aea aeb aee aeg aek ael aeo aer ag- aga agb age agg agk agl ago agr aka akb ake akg akk akl ako akr al- ala alb ale alg alk all alo alr aoa aob aoe aog aok aol aoo aor ar- ara arb are arg ark arl aro arr baa bab bae bag bak bal bao bar bba bbb bbe bbg bbk bbl bbo bbr be- bea beb bee beg bek bel beo ber bga bgb bge bgg bgk bgl bgo bgr bka bkb bke bkg bkk bkl bko bkr bla blb ble blg blk bll blo blr boa bob boe bog bok bol boo bor bra brb bre brg brk brl bro brr eaa eab eae eag eak eal eao ear eba ebb ebe ebg ebk ebl ebo ebr eea eeb eee eeg eek eel eeo eer ega egb ege egg egl ego egr eka ekb eke ekg ekl eko ekr ela elb ele elg elk ell elo elr eo- eoa eob eoe eog eok eol eoo eor era erb ere erg erk erl ero err gaa gab gae gag gak gal gao gar gba gbe gbg gbk gbl gbo gbr ge- gea geb gee geg gek gel geo ger gga ggb ggg ggo ggr gka gkb gko gla glb gle glg glk gll glo glr goa gob goe gog gok gol goo gor gra grb gre grg grk grl gro grr ka- kaa kab kae kag kak kal kao kar kba kbb kbe kbk kbl kbo kbr ke- kea keb kee keg kek kel keo ker kga kgb kgl kgo kkb kke kkk kkl kkr kl- kla klb klg klo klr koa kob koe kog kok kol koo kor kra krg krk krl kro krr la- laa lab lae lag lak lal lao lar lba lbb lbe lbg lbk lbl lbo lbr lea leb lee leg lek lel leo ler lga lgb lge lgg lgk lgl lgo lgr lka lkb lkg lkl lkr lla llb lle llg llk lll llo llr loa lob loe log lok lol loo lor lra lrb lrg lrk lro lrr oaa oab oae oag oak oal oao oar ob- oba obb obe obg obk obl obo obr oea oeb oee oeg oel oeo oer oga oge ogg ogl ogo oka okb oke okg okk okl oko okr ola olb ole olg olk oll olo oo- ooa oob oog ook ool ooo oor or- ora orb ore org ork orl oro orr ra- raa rab rae rag rak ral rao rar rba rbb rbe rbg rbk rbl rbo rbr re- rea reb ree reg rek rel reo rer rga rgb rge rgg rgk rgo rgr rkb rke rkg rkk rko rla rle rlg rll rlo rlr roa rob roe rog rok rol roo ror rra rrb rrg rrk rrl rrr