-er b-u bbb bbe bbi bbk bbo bbr bbs bbu bbw be- beb bee bei bek beo ber bes beu bew bi- bib bie bii bik bio bir bis biu biw bkb bke bkk bko bkr bks bkw bob boe boi bok boo bor bos bou bow brb bre bri brk bro brr brs bru brw bsb bse bsi bsk bso bsr bss bsu bsw bub bue bui buk buo bur bus buu buw bwb bwi bwk bwo bwr bws bwu ebb ebe ebi ebk ebo ebr ebs ebu ebw eeb eee eek eeo eer ees eew eib eie eii eik eio eir eis eiu ekb eke eki eko ekr eks eku eo- eob eoe eoi eok eoo eor eos eou eow erb ere eri erk ero err ers eru erw es- esb ese esi esk eso esr ess esu esw eu- eub eue eui eur eus ewb ewe ewi ewk ewo ewr ews ewu eww ibb ibe ibi ibk ibo ibr ibs ibu ibw ie- iee iei iek ier ies iib iie iii iio iir iis iiu iiw ikb ike iki ikk iko ikr iks iku io- iob ioe ioi ioo ior ios iou iow ir- irb ire iri irk iro irr irs iru is- isb ise isi isk iso isr iss isu isw iu- iub iue iui iur ius iwb iwe iwi iwk iwo iwr iws iwu iww kbb kbe kbi kbk kbo kbr kbs kbu kbw ke- keb kee kei kek keo ker kes kew kib kie kii kik kio kir kis kiu kkb kke kki kkk kkr kks kku kob koe koi kok koo kor kos kou kow kri krk kro krr krs kru krw ksb kse ksi ksk kso ksr kss ksu ksw kub kue kui kuk kur kus kuu kw- kwi kwk kwo kws kww o-i ob- obb obe obi obk obo obr obs obu obw oeb oee oei oeo oer oes oib oie oii oik oio oir ois oiu okb oke oki okk oko okr oks oku okw oo- oob ooi ook ooo oor oos oow or- orb ore ori ork oro orr ors oru os- osb ose osi osk oso osr oss osu osw ou- oue oui ouk ouo our ous owb owe owi owk owo ows owu oww rbb rbe rbi rbk rbo rbr rbs rbu rbw re- reb ree rei rek reo rer res reu rew rib rie rii rik rio rir ris rkb rke rkk rko rks rku rob roe roi rok roo ror ros rou row rrb rri rrk rrr rrs rru rsb rse rsi rsk rso rsr rss rsu rsw rub rue rui ruk ruo rur rus ruu rwb rwe rwi rwr rws rwu sbb sbe sbi sbk sbo sbr sbs sbu sbw se- seb see sei sek seo ser ses seu sew sib sie sii sik sio sir sis siu siw sk- skb ske ski skk sko skr sks sku skw sob soe soi sok soo sor sos sou sow sr- srb sre sri srk sro srr srs srw ss- ssb sse ssi ssk sso ssr sss ssu ssw sub sue sui suk suo sur sus suu suw swb swe swi swk swo swr sws swu ubb ube ubi ubk ubo ubr ubs ubu ubw ueb uee uei uer ues uew uib uie uii uio uir uis uiu ukb uke uki ukk ukr uku uob uoe uok uoo uor uos uow ur- urb ure uri urk uro urr urs uru urw usb use usi usk uso usr uss usu usw uue uur uus uuu uwb uwe uwr uws uww wbb wbe wbi wbo wbr wbs wbw web wee wei wek weo wer wes wew wib wie wii wik wir wis wiu wkb wke wko wkr wks wkw wob woe woi wok woo wor wos wou wow wr- wre wri wrk wro wrr wrs wru wrw wsb wse wsi wsk wso wsr wss wsu wsw wub wue wuo wur wus wwe wwi wwo wwu www