bbbb bbpr bfpo bfpp bftt bmop bmpt bobb bobo boff bomb bomp bomt boob boof boom boop boor boot bopp bor- borf borm boro borr bort botb boto bott bpot bptf brfm brob brom broo bror brot brrm brrr btbp btob btor btrt bttb fbom fbop ffff ffrr fftf fobt fofo fomo fomp fomt foof foom foot fopp for- forb form foro forr fort fotm foto fotp fott fprf frob from frop frot ftop mfbm mfor mfrp mftf mmff mmmm mmor mmpr mmrf mmrp mobb mobo moff mofo momo moob moop moor moot mopp morb morf moro mort motb motm moto mott mppf mppp mprf mpro mprp mptp mrbb mrbm mrtm mrtt mtbo mtff mtom mtor mtrr mttr obbo obor obot obro off- offo offr ofor oftp ombo omo- omoo omor ompt omro ooff oooo oort ootb ootp opo- opor oppo opto orbb orbo orff ormo oro- orof orom oror orot orro orto otfp oto- otof otoo otor otpp otro otto pbmr pbrf pfff pffr pfft pmbr pmmp pmpm pmpo pmrt pobo poff pomo pomp poof poop poor poot pop- popo popp popt porb poro porr port potf poto pott pppo pppp pprf pprm pptt pro- prob prof prom proo prop prot prrm prtm prtp prtr ptmp ptop ptrf rbbb rbbr rmrp rob- robb robo robt roff rofo romb romm romo romp roob roof room roop roor root ropo roro rort roto rotr rott rpob rpof rrmp rrrr rtbf rtfb rtfm rtmp rttp t-mo tbrb tbtp tfot tfpt tftp tmbr tmro tmtt tobo tobt toff tofo toft tomb tomm tomo tomp tomt toof toom toor toot top- topf topo topp topt torf torm toro torp torr tort totm toto totr tott tpmt tppp tppr tptp tptr trfm trfr trmb trom troo trop trot trpm trpp trtr ttbb ttff ttop tttt