ffff ffrr fftf fofo fomo fomp fomt foof foom foot fopp for- form foro forr fort fotm foto fotp fott fprf from frop frot ftop mfor mfrp mftf mmff mmmm mmor mmpr mmrf mmrp moff mofo momo moop moor moot mopp morf moro mort motm moto mott mppf mppp mprf mpro mprp mptp mrtm mrtt mtff mtom mtor mtrr mttr off- offo offr ofor oftp omo- omoo omor ompt omro ooff oooo oort ootp opo- opor oppo opto orff ormo oro- orof orom oror orot orro orto otfp oto- otof otoo otor otpp otro otto pfff pffr pfft pmmp pmpm pmpo pmrt poff pomo pomp poof poop poor poot pop- popo popp popt poro porr port potf poto pott pppo pppp pprf pprm pptt pro- prof prom proo prop prot prrm prtm prtp prtr ptmp ptop ptrf rmrp roff rofo romm romo romp roof room roop roor root ropo roro rort roto rotr rott rpof rrmp rrrr rtfm rtmp rttp t-mo tfot tfpt tftp tmro tmtt toff tofo toft 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 trom troo trop trot trpm trpp trtr ttff ttop tttt