b-u bbb bbe bbi bbk bbl bbs bbu bbw be- beb bee bei bek bel bes beu bew bi- bib bie bii bik bil bis biu biw bkb bke bkk bkl bks bkw blb ble bli blk bll bls blu bsb bse bsi bsk bsl bss bsu bsw bub bue bui buk bul bus buu buw bwb bwi bwk bwl bws bwu ebb ebe ebi ebk ebl ebs ebu ebw eeb eee eek eel ees eew eib eie eii eik eil eis eiu ekb eke eki ekl eks eku elb ele eli elk ell els elu elw es- esb ese esi esk esl ess esu esw eu- eub eue eui eul eus ewb ewe ewi ewk ewl ews ewu eww ibb ibe ibi ibk ibl ibs ibu ibw ie- iee iei iek iel ies iib iie iii iil iis iiu iiw ikb ike iki ikk ikl iks iku il- ilb ile ili ilk ill ils ilu is- isb ise isi isk isl iss isu isw iu- iub iue iui ius iwb iwe iwi iwk iwl iws iwu iww kbb kbe kbi kbk kbl kbs kbu kbw ke- keb kee kei kek kel kes kew kib kie kii kik kil kis kiu kkb kke kki kkk kkl kks kku kl- klb kli kls klu ksb kse ksi ksk ksl kss ksu ksw kub kue kui kuk kul kus kuu kw- kwi kwk kws kww lbb lbe lbi lbk lbl lbs lbu lbw leb lee lei lek lel les leu lew lib lie lii lik lil lis liu liw lkb lkl lks llb lle lli llk lll lls llu llw lsb lse lsi lsk lsl lss lsu lsw lub lue lui luk lul lus luu lwb lwi lwl lws lww sbb sbe sbi sbk sbl sbs sbu sbw se- seb see sei sek sel ses seu sew sib sie sii sik sil sis siu siw sk- skb ske ski skk skl sks sku skw slb sle sli slk sll sls slu ss- ssb sse ssi ssk ssl sss ssu ssw sub sue sui suk sul sus suu suw swb swe swi swk swl sws swu ubb ube ubi ubk ubl ubs ubu ubw ueb uee uei uel ues uew uib uie uii uil uis uiu ukb uke uki ukk ukl uku ulb ule uli ulk ull uls ulu usb use usi usk usl uss usu usw uue uus uuu uwb uwe uwl uws uww wbb wbe wbi wbs wbw web wee wei wek wel wes wew wib wie wii wik wil wis wiu wkb wke wks wkw wl- wlb wle wli wll wls wlu wlw wsb wse wsi wsk wsl wss wsu wsw wub wue wus wwe wwi wwl wwu www