bbb bbd bbo bbr bbt bdb bdd bdo bdr bdt bob bod boo bor bot brb brd bro brr brt btb btd bto btr btt dbb dbd dbo dbr dbt ddb ddd ddo ddr ddt dob dod doo dor dot drb drd dro drr drt dtb dtd dto dtr dtt ob- obb obd obo obr obt odb odd odo odr odt oo- oob ood ooo oor oot or- orb ord oro orr ort ot- otb otd oto otr ott rbb rbd rbo rbr rbt rdb rdd rdo rdr rdt rob rod roo ror rot rrb rrd rrr rrt rtb rtd rto rtr rtt tbb tbd tbo tbr tbt tdb tdd tdo tdr tdt to- tob tod too tor tot trb trd tro trr trt ttb ttd tto ttr ttt

bbbb bbdd bbdo bd-r bobb bobo bodb bodo boob bood boor boot bor- bord boro borr bort botb botd boto bott brdo brdt brob brod broo bror brot brrr btdt btob btor btrt bttb d-bo dbtt dddd ddot dobb dod- dodd dodo doob dood door doot dord doro dorr dort dotd doto dott drob drod drot dtor dtot obbo obdt obor obot obro obtd odbo oddd odoo odor odot oooo oord oort ootb orbb orbo ordo oro- oror orot orro orto otbd oto- otoo otor otro otto rbbb rbbr rob- robb robo robt rodd rodo roob rood roor root roro rort roto rotr rott rrrr rtdt tbrb tddb tdor tobo tobt todd todo todt tood toor toot tord toro torr tort totd toto totr tott trod troo trot trtr ttbb tttt

bdoor bo-bo bobr bodd- bodor boord boort borbo bordo boro- borod boroo borot borro botro brobo brodd brodo brood broto brrrr btr-d btr-t d-dot d-rod ddddd do-do dobro dodoo dodro doodo dordt dorot dotoo dotto drbob drobo drood drott o-r-b obodo oboro ooooo orbot ordro orobo orodo ortoo ototo ro-ro robbo robo- robor robot robrt rodbo rodor roto- rotor rotot rotto tbtbt to-do tobor tobot todor toord torob torro torto toto- totoo trood trott ttttt

bbbbbb booboo borbor bororo botoro brotto dododo doorto dorbod dorobo dorood dororo dotbot dotdot dotodo drobot oooooo oordoo ottoor roboto rorodt toboot tootoo torodo tororo tortor totoro totrot trotro

bbbbbbb boo-boo dob-dob dobrodo dod-rot doo-doo oroboro ottrott rootrot too-too tototoo tro-tro

bbbbbbbb bo-bo-bo dottodot toottoot torotoro

borborbor ddddddddd doot-doot dotdotdot

doortodoor

door-to-door

bbbbbbbbbbbbbbb doodoodoodoodoo