-ol bbb bbg bbi bbl bbo bbr bbx bgb bgg bgi bgl bgo bgr bgx bi- bib big bii bil bio bir bix blb blg bli bll blo blr blx bob bog boi bol boo bor box brb brg bri brl bro brr brx bxb bxi bxl bxo bxx gbg gbi gbl gbo gbr gbx ggb ggg ggi ggo ggr gib gig gii gil gio gir glb glg gli gll glo glr glx gob gog goi gol goo gor gox grb grg gri grl gro grr grx gxl ibb ibg ibi ibl ibo ibr ibx igb igg igi igl igo igr iib iii iil iio iir iix il- ilb ilg ili ill ilo ilr ilx io- iob iog ioi iol ioo ior ir- irb irg iri irl iro irr irx ixi ixl lbb lbg lbi lbl lbo lbr lbx lgb lgg lgi lgl lgo lgr lib lig lii lil lio lir lix llb llg lli lll llo llr lob log loi lol loo lor lox lrb lrg lri lro lrr lxi lxo lxr lxx o-i ob- obb obg obi obl obo obr obx ogg ogi ogl ogo ogx oib oii oil oio oir olb olg oli oll olo oo- oob oog ooi ool ooo oor oox or- orb org ori orl oro orr orx ox- oxb oxi oxo oxx rbb rbg rbi rbl rbo rbr rbx rgb rgg rgi rgo rgr rgx rib rig rii ril rio rir rix rlg rli rll rlo rlr rob rog roi rol roo ror rox rrb rrg rri rrl rrr rxr xbl xbr xbx xgi xgl xii xio xix xlb xlg xli xlr xog xoi xoo xor xox xrx xxi xxl xxo xxx