ffff ffrr fftf floo flop flor flot fofo foll folo folr folt foof fool foot fopp for- forl foro forr fort foto fotp fott fprf frol frop frot ft-l ftop lftp llll lloo loff loft loll lolo loof lool loop loor loot lopp loro lotl loto lotr lott lpfp lpft lppl lprp lrrr lttr off- offo offr ofor oftp ollo olof olor olot ooff oolo oooo oort ootp opo- opor oppo opto orff orlo oro- orof oror orot orro orto otfp oto- otof otoo otor otpp otro otto pfff pffr pfft plff ploo plop plot plpp pltf pltt poff poll polo polt poof pool poop poor poot pop- popo popp popt poro porr port potf poto pott pplo pppo pppp pprf pptt prlr pro- prof prol proo prop prot prtp prtr ptol ptop ptrf rffl roff rofl rofo rolf roll rolo rolp rolt roof rool roop roor root ropo roro rort rotl roto rotr rott rpof rrrr rtlt rttp tfot tfpt tftp toff tofo toft tol- toll tolo tolt toof tool toor toot top- topf topo topp topt torf toro torp torr tort toto totr tott tpol tppp tppr tptp tptr trfr troo trop trot trpp trtr ttff ttop tttt