b-p bbb bbo bbp bbr bbt bob boo bop bor bot bpb bpo bpp bpr bpt brb bro brp brr brt btb bto btp btr btt ob- obb obo obp obr obt oo- oob ooo oop oor oot op- opb opo opp opr opt or- orb oro orp orr ort ot- otb oto otp otr ott p-p pbb pbo pbp pbr pbt pob poo pop por pot ppb ppo ppp ppr ppt prb pro prp prr prt pt- ptb pto ptp ptr ptt rbb rbo rbp rbr rbt rob roo rop ror rot rpb rpo rpp rpr rpt rrb rrp rrr rrt rtb rto rtp rtr rtt tbb tbo tbp tbr tbt to- tob too top tor tot tpb tpo tpp tpr tpt trb tro trp trr trt ttb tto ttp ttr ttt

bbbb bbpr bobb bobo boob boop boor boot bopp bor- boro borr bort botb boto bott bpot brob broo bror brot brrr btbp btob btor btrt bttb obbo obor obot obro oooo oort ootb ootp opo- opor oppo opto orbb orbo oro- oror orot orro orto oto- otoo otor otpp otro otto pobo poop poor poot pop- popo popp popt porb poro porr port poto pott pppo pppp pptt pro- prob proo prop prot prtp prtr ptop rbbb rbbr rob- robb robo robt roob roop roor root ropo roro rort roto rotr rott rpob rrrr rttp tbrb tbtp tobo tobt toor toot top- topo topp topt toro torp torr tort toto totr tott tppp tppr tptp tptr troo trop trot trpp trtr ttbb ttop tttt

bo-bo bobr boort borbo boro- boroo borot borro botro brobo broto brrrr btr-t o-r-b oboro ooooo opobo opto- optot optto orbot orobo ortoo ototo otpor po-po poopo poort popop poppo poro- porro porto potoo potop potor potro potto probo proor proot prop- propp propr propt prot- proto prtor ptprb ptpro ptprr ptprt ro-ro robbo robo- robop robor robot robrt roto- rotor rotot rotto rprop rptor t-pop t-top tbtbt tobor tobot topbt topo- topor topot toppo toptb topto torob torpo torro torto toto- totoo totop tprot troop trop- tropo trott ttttt

bbbbbb booboo borbor bororo botoro brotto oooooo oporto optoro ottoor poopoo popbot popopo poporo poppop poptop pottop pppppp probot proto- roboto toboot tootoo toppop tororo torpor tortor totopo totoro totrot tropo- troppo trotro

bbbbbbb boo-boo oroboro ottrott poo-poo pop-top potoroo proport rob-pot robopop rootrot too-too topboot tototoo tro-tro

bbbbbbbb bo-bo-bo boot-top poorpoor poroporo toottoot top-boot top-root torotoro

borborbor poto-poto proprotor

potoooooooo

toptoptoptop

bbbbbbbbbbbbbbb