-er b-u bbb bbe bbi bbo bbq bbr bbu be- beb bee bei beo beq ber beu bi- bib bie bii bio bir biu bob boe boi boo boq bor bou bqe brb bre bri bro brq brr bru bub bue bui buo bur buu ebb ebe ebi ebo ebq ebr ebu eeb eee eeo eer eib eie eii eio eir eiu eo- eob eoe eoi eoo eoq eor eou eqe eqq equ erb ere eri ero erq err eru eu- eub eue eui eur ibb ibe ibi ibo ibr ibu ie- iee iei ier iib iie iii iio iir iiu io- iob ioe ioi ioo ior iou iqe iqu ir- irb ire iri iro irq irr iru iu- iub iue iui iur o-i ob- obb obe obi obo obr obu oeb oee oei oeo oer oib oie oii oio oir oiu oo- oob ooi ooo oor oqb oqo or- orb ore ori oro orr oru ou- oue oui ouo our qbe qbq qee qeo qie qio qir qiu qoi qoo qor qqq qqu qrb qre qri qru qu- que qui quo qur rbb rbe rbi rbo rbr rbu re- reb ree rei reo req rer reu rib rie rii rio riq rir rob roe roi roo ror rou rrb rri rrq rrr rru rub rue rui ruo rur ruu ubb ube ubi ubo ubr ubu ueb uee uei uer uib uie uii uio uiq uir uiu uob uoe uoo uor ur- urb ure uri uro urr uru uue uur uuu