b-u bbb bbi bbr bbt bbu bi- bib bii bir bit biu biv brb bri brr brt bru brv btb bti btr btt btu btv bub bui bur but buu bvb bvi bvr bvt bvu bvv i-v ibb ibi ibr ibt ibu ibv iib iii iir iit iiu ir- irb iri irr irt iru irv itb iti itt itu itv iu- iub iui iur iut ivb ivi ivr ivt ivu ivv rbb rbi rbr rbt rbu rib rii rir rit riv rrb rri rrr rrt rru rtb rti rtr rtt rtu rtv rub rui rur rut ruu ruv rvb rvi rvr rvt rvu rvv tbb tbi tbr tbt tbu tbv tib tii tir tit tiu tiv trb tri trr trt tru trv ttb tti ttr ttt ttu ttv tub tui tur tut tuu tuv tvb tvi tvr tvt tvu ubb ubi ubr ubt ubu ubv uib uii uir uit uiu ur- urb uri urr urt uru utb uti utr utt utu utv uur uut uuu uvb uvu uvv vbi vbr vbv vi- vib vii vir vit viu viv vrb vri vrr vrt vru vtb vti vtr vtt vtu vtv vur vut vuv vvb vvi vvr vvt vvv

bbbb bibb bibi birb biri birr birt biru bitt bitu bivi brit brrr brut bruv brvi btrt bttb btvi bubb bubi bubu buir buit buiu bur- burb buri burr burt buru but- buti butt ibri ibtb iiii iiit iitr iitt iri- irri irti itri itur iuiu ivbv rbbb rbbr rib- ribu riri riti ritt ritu rrrr rtvi rubb rubi rubu ruit ruri ruru ruti rutt rutu ruvi ruvu tbit tbrb tbvi tibi tibu tiit tiiu tirb tiri tirr tiru titi titt titu tivi tri- trib trit trtr trub trut truu ttbb tttt tubb tubr tubu tuit tuiu turb turi turr turt turu tuti tutt tutu tvri tvrr tvtv ubbi ubii ubir ubit uirr urbi urib uriu urri urur urut utri utti uttu uuri uuuu uv-b uvri uvvu viii virb viri virr virt viru viti vitt vitu vivi vt-i vuir vuit vurb vurt vuti vutv vvvv

bibri birur bitit bitru bitti britt brrrr bruit bruiu bruri btr-t burri burru burtt burut butit butut ibbur iiiii iitti irbit irrit itbit ittti itu-r itu-t ituri ituru itutu ribbi rubbi ruiru ruutu rvivr tbtbt tbutt ti-ti tibbi tibbu tibur tirit tirru tirur titii titti tribu trit- tritt trubu truit trutv ttttt tubi- tubri turbi turbt turit turri turtu turut tutti tuubi tuuri tuuru u-bit ubirr uitti urivi urubu uruit ururi uruti urutu uttur uturu uuuuu viiri virii virtu virut viti- vitr- vitti vittu viutv vivi- vivir vvt-i

bbbbbb bibiri bibiru biribi bittur bribir bribri brubru brutii brutti bububu burbur buriti bururi burutu buttir ittiri iturbi ribbit rititi rubutu rurutu tibbit tibiri tirrit titbit titibu titiri tribit tribut truitt tuiuti turbit turtur tururu tuttut tuvvur utrubi virtru vitruv vritti vvvvvv

bbbbbbb bi-tri- bruttii riitiir tibbitt tit-bit tut-tut uriburu viruvur

bbbbbbbb buruburu i-ii-iii i-iv-v-i ivittuut rutuburi tiruvuru

titiribi vi-ii-v-i

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