b-u bbb bbo bbr bbt bbu bob boo bor bot bou brb bro brr brt bru btb bto btr btt btu bub buo bur but buu ob- obb obo obr obt obu oo- oob ooo oor oot or- orb oro orr ort oru ot- otb oto otr ott otu ou- ouo our out rbb rbo rbr rbt rbu rob roo ror rot rou rrb rrr rrt rru rtb rto rtr rtt rtu rub ruo rur rut ruu tbb tbo tbr tbt tbu to- tob too tor tot tou trb tro trr trt tru ttb tto ttr ttt ttu tub tuo tur tut tuu ubb ubo ubr ubt ubu uob uoo uor uot ur- urb uro urr urt uru utb uto utr utt utu uur uut uuu

bbbb bobb bobo bobu boob boor boot bor- boro borr bort boru botb boto bott bour bout brob broo bror brot brou brrr brut btob btor btrt bttb bubb bubo bubu bur- burb buro burr burt buru but- buto butt obbo obor obot obro oooo oort ootb orbb orbo orbu oro- oror orot orro orto orub oto- otoo otor otro otto ottu otur our- ouro ourt out- outb outo ouu- rbbb rbbr rob- robb robo robt robu roob roor root roro rort roru roto rotr rott roub rout rrrr rubb rubu ruro ruru ruto rutt rutu tbrb tobo tobt tobu toor toot toro torr tort toru toto totr tott tour tout troo trot trou trtr trub trut truu ttbb tttt tubb tubo tubr tubu tuor turb turo turr turt turu tuto tutt tutu tuuo ubbo uor- uro- uroo urur urut utor utto uttu uuuu

bo-bo bobr boort booru borbo boro- boroo borot borou borro borut botou botro bottu bouto brobo broto brout brrrr btr-t buroo burro burru burtt burut buto- butor butot butou butuo butut o-r-b oboro obout ooooo orbot orobo orout ortoo oruro orutu ototo otour ottur oubut ouoro outro outto ro-ro robbo robo- robor robot robrt robur rorbu roto- rotor rotot rotto roubt routt rubor ruutu tbtbt tbutt tobor tobot tobou torob torro torto tortu toto- totoo touro trott trout trubu truro ttttt tubo- tubou tuotu turbo turbt turot turro turtu turut tutor tutto tuuru ubobo uroob urour urubu urutu utro- utror uttur uturu ututo uuuuu

bbbbbb booboo borbor bororo botoro boubou bourou boutob brotto brubru brutto bububu burbot burbur burotu burutu butbro buttto buutuo obturb oooooo orrour ottoor outour outtro roboto rotour rotout rotrou routot rubbot rubout rubro- rubutu rurutu rutour toboot tootoo tororo tortor tortou totoro totrot tourou toutou toutuo trotro tuotuo turbo- turbot turtur tururu tutour tuttut u-boot utroor

bbbbbbb boo-boo bootout borotou bourout bourrou buttout oroboro ottrott outboob outbutt outroot rootout rootrot rub-out rubbour too-too tortour tototoo touboro tro-tro trotout trubrot turbott tut-tut ububboo

bbbbbbbb bo-bo-bo broubrou buruburu roboturb toottoot torotoro tourtour turturro ubbubboo

borborbor tuotuorou tuttototo

tutortrout

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