-al -ol a-a a-b a-z aaa aab aag aal aao aar aaz ab- aba abb abg abl abo abr abz ag- aga agb agg agl ago agr agz al- ala alb alg all alo alr alz aoa aob aog aol aoo aor ar- ara arb arg arl aro arr arz az- aza azb azg azo azz baa bab bag bal bao bar baz bba bbb bbg bbl bbo bbr bga bgb bgg bgl bgo bgr bgz bla blb blg bll blo blr blz boa bob bog bol boo bor boz bra brb brg brl bro brr brz bza bzo bzr bzz gaa gab gag gal gao gar gaz gba gbg gbl gbo gbr gbz gga ggb ggg ggo ggr ggz gla glb glg gll glo glr glz goa gob gog gol goo gor goz gra grb grg grl gro grr gza gzo gzr la- laa lab lag lal lao lar laz lba lbb lbg lbl lbo lbr lga lgb lgg lgl lgo lgr lla llb llg lll llo llr llz loa lob log lol loo lor loz lra lrb lrg lro lrr lrz lzo lzr oaa oab oag oal oao oar ob- oba obb obg obl obo obr oga ogg ogl ogo ola olb olg oll olo oo- ooa oob oog ool ooo oor or- ora orb org orl oro orr orz oza ozo ozz ra- raa rab rag ral rao rar raz rba rbb rbg rbl rbo rbr rga rgb rgg rgo rgr rla rlg rll rlo rlr roa rob rog rol roo ror roz rra rrb rrg rrl rrr rza rzb rzo z-g zaa zab zag zao zar zaz zbb zbl zbr zgb zgg zla zlr zo- zoa zob zog zol zoo zor zrl zro zzr zzz