bbbb bbbs bboy bbyo bobb bobo bobs boby bomb boms bomy boob boom boor boos bor- borm boro borr bors bory bosm boso boss boyo boys brob brom broo bror bros brrm brrr brrs brsb brsr bry- bryo bsms bsos bsrm bssm byob byos bysb bysm byso byss bysy mbbs mbms mbrs mmmm mmms mmor mmyy mobb mobo mobs moby momo moms momy moob moor moos morb moro mors mory moso moss mosy moyo mrbb mrbm mrbs msmb msmm msms msor msrb mssm mssr mybb mymy myo- myob myos myro myrr myry mys- myss myys obbo obby obor obos oboy obro obsr obss ombo omo- omoo omor omro ooby ooms oooo ooos oory orbb orbo orbs orby ormo ormy oro- orom oror oros oroy orro orrs orry orso orsy orys osby osm- osmo osoo osor osos osro ossb osso ossy oyss rbbb rbbr rbbs rbms rbss rmbs rob- robb robo robs roby romb romm romo roms romy roob room roor roos roro rory roso ross rosy roys rrrr rsos ryob rysy s-os sbbs sbor smos smoy smry smss sobo sobr sobs somb somm somo somy soom soor soos sooy sorb sorm soro sorr sors sory soso soss soyo soys srby sros ssbr ssby ssrm ssrs sssb sssm ssss sybo sym- syms syro syrs syry syso syss ybbs ybor ybry yobo yobs yomo yoro yory yoso yoyo ysby ysyb yyyy