-er bbb bbd bbe bbg bbi bbo bbr bdb bdd bde bdg bdi bdo bdr be- beb bed bee beg bei beo ber bgb bgd bge bgg bgi bgo bgr bi- bib bid bie big bii bio bir bob bod boe bog boi boo bor brb brd bre brg bri bro brr dbb dbd dbe dbg dbi dbo dbr ddb ddd dde ddg ddi ddo ddr de- deb ded dee deg dei deo der dgd dge dgg dgi dgr di- dib did die dig dii dio dir dob dod doe dog doi doo dor drb drd dre drg dri dro drr ebb ebd ebe ebg ebi ebo ebr ed- edb edd ede edg edi edo edr eeb eed eee eeg eeo eer egb egd ege egg egi ego egr eib eid eie eig eii eio eir eo- eob eod eoe eog eoi eoo eor erb erd ere erg eri ero err g-d gbd gbe gbg gbi gbo gbr gdb gdd gde gdi gdo gdr ge- geb ged gee geg gei geo ger ggb ggd ggg ggi ggo ggr gib gid gie gig gii gio gir gob god goe gog goi goo gor grb grd gre grg gri gro grr i-d ibb ibd ibe ibg ibi ibo ibr idb idd ide idg idi ido idr ie- ied iee ieg iei ier igb igd ige igg igi igo igr iib iid iie iii iio iir io- iob iod ioe iog ioi ioo ior ir- irb ird ire irg iri iro irr o-i ob- obb obd obe obg obi obo obr odb odd ode odg odi odo odr oeb oed oee oeg oei oeo oer ogd oge ogg ogi ogo oib oid oie oii oio oir oo- oob ood oog ooi ooo oor or- orb ord ore org ori oro orr rbb rbd rbe rbg rbi rbo rbr rdb rdd rde rdg rdi rdo rdr re- reb red ree reg rei reo rer rgb rgd rge rgg rgi rgo rgr rib rid rie rig rii rio rir rob rod roe rog roi roo ror rrb rrd rrg rri rrr