-er b-u bbb bbe bbg bbi bbo bbr bbu be- beb bee beg bei beo ber beu bgb bge bgg bgi bgo bgr bgu bi- bib bie big bii bio bir biu bob boe bog boi boo bor bou brb bre brg bri bro brr bru bub bue bug bui buo bur buu ebb ebe ebg ebi ebo ebr ebu eeb eee eeg eeo eer egb ege egg egi ego egr egu eib eie eig eii eio eir eiu eo- eob eoe eog eoi eoo eor eou erb ere erg eri ero err eru eu- eub eue eug eui eur gbe gbg gbi gbo gbr gbu ge- geb gee geg gei geo ger geu ggb ggg ggi ggo ggr ggu gib gie gig gii gio gir giu gob goe gog goi goo gor gou grb gre grg gri gro grr gru gu- gub gue gug gui guo gur guu ibb ibe ibg ibi ibo ibr ibu ie- iee ieg iei ier igb ige igg igi igo igr igu iib iie iii iio iir iiu io- iob ioe iog ioi ioo ior iou ir- irb ire irg iri iro irr iru iu- iub iue iug iui iur o-i ob- obb obe obg obi obo obr obu oeb oee oeg oei oeo oer oge ogg ogi ogo oib oie oii oio oir oiu oo- oob oog ooi ooo oor or- orb ore org ori oro orr oru ou- oue oui ouo our rbb rbe rbg rbi rbo rbr rbu re- reb ree reg rei reo rer reu rgb rge rgg rgi rgo rgr rib rie rig rii rio rir rob roe rog roi roo ror rou rrb rrg rri rrr rru rub rue rug rui ruo rur ruu ubb ube ubg ubi ubo ubr ubu ueb uee ueg uei uer ugb uge ugg ugi ugo ugr ugu uib uie uig uii uio uir uiu uob uoe uog uoo uor ur- urb ure urg uri uro urr uru uue uug uur uuu