ffff ffps ffrr ffss fftf fnrs fnsp fofo fono fons font foof foon foos foot fopp fops for- forn foro forr fors fort foso foss fost foto fotp fots fott fprf frns fron frop fros frot frps frso frst fsfo fspf fssf fssp ftop ftos ftps ftrs ftsr nfff nfon nfps nfrs nfsr nfto nnnn nnos nnot nnpr nnss nntn non- nonn nono nons nont noo- noon nooo noop noor noos noot nops nor- norf norn noro norr nors nort nos- noss nost not- noto nots nott nprt npss nptn nron nrpn nrps nrsp nrts nsfs nsnr nsof nsos nsps nssf nsso nssp nssr nsss nstp nsts ntfp ntfs ntof ntop ntsf ntss ntto nttr off- offo offr offs ofno ofor ofst oftp onno onon onor onos onpt onso onst ont- onto ooff oofs oons oont oooo ooos oops oort oost ootp oots opo- opon opor opos oppo opps optn opto opts orff orfs orno orns oro- orof oron oror oros orot orps orro orrs orso orto orts osno osnr osoo osor osos osro osso ostr osts otfp oto- otof oton otoo otor otos otpp otro otrs otso otto otts pfff pffr pfft pfps pnon pnot pnpo pnpp pnro pntr poff pono ponp pons pont poof poon poop poor poos poot pop- popo popp pops popt porn poro porr pors port posn poso poss post potf poto pots pott ppos pppn pppo pppp ppps pprf ppsf ppss pptn ppts pptt prfs prnp pro- prof pron proo prop pros prot prps prrs prso prss prtp prtr psfs psnr pson psos pspp pspr psps psrp psso psst psts ptop ptrf rnnt rnot rnsp rntp roff rofo rono rons ront roof roon roop roor roos root ropo rops roro rort roso rosp ross rost rotn roto rotr rots rott rpof rpon rpos rppn rpps rptn rpts rrrr rrsp rsnn rsno rsnr rsos rspo rsps rstp rsts rtns rtps rtss rttp rtts s-os sfnt sfor sfos sfro sfss sftp sfts snns snoo snop snor snos snot snpo snpp snrs sntr sofo soft son- sono sons sont soof soon soop soor soos soot sopo sopp sops sorn soro sorr sors sort soso soss sost sotn soto sotp sots spfs spns spon spoo spop spor spos spot sppf spps spro sprs spso spsp spss spst spto sptr spts srnn srno sros srps srpt srsp srtp srtr ssfp ssns ssop ssot sspf sspo ssps sspt ssrs sssf ssss sstp ssts stfn stnn stnr stns stof ston stoo stop stor stos stot stpf stpp stps strn stro strs stsf stss sttr tfnp tfot tfpt tfrs tfss tftp tnsp tnts toff tofo toft tonn tono tons toof toon toor toos toot top- topf topo topp tops topt torf torn toro torp torr tors tort toso toss tost toto totr tots tott tpon tppp tppr tprs tptp tptr trfr trno tron troo trop tros trot trpn trpp trps trst trtr tsop tsos tspn tspo tsps tspt tssf tssr tsst tsts ttff ttfn tton ttop ttss tttt