ffff ffps ffrr ffss floo flop flor flos fofo foll folo folr fols foof fool foos fopp fops for- forl foro forr fors foso foss fprf frol frop fros frps frso fsfo fspf fssf fssp llll lloo llps loff loll lolo lols loof lool loop loor loos lopp lops loro lors loso losp loss lpfp lppl lprp lpss lrps lrrr ls-r lsof lspl lspr lsso lssp lssr off- offo offr offs ofor olfs ollo olof olor olos ooff oofs oolo oooo ooos oops opls opo- opor opos oppo opps orff orfs orlo oro- orof oror oros orps orro orrs orso oslo osoo osor osos osro osso pfff pffr pfps plff ploo plop plos plpp plss poff poll polo pols poof pool poop poor poos pop- popo popp pops poro porr pors poso poss pplo ppos pppo pppp ppps pprf ppsf ppss prfs prlr prls pro- prof prol proo prop pros prps prrs prsl prso prss psfs psol psos pspp pspr psps psrp psso rffl rlls roff rofl rofo rolf roll rolo rolp roof rool roop roor roos ropo rops roro roso rosp ross rpls rpof rpos rpps rrrr rrsp rslp rsos rspo rsps rssl s-os sfls sfor sfos sfro sfss sllp sloo slop slos slpp slps slrp slrs sofo solf soll solo solp solr sols soof sool soop soor soos sopo sopp sops soro sorr sors soso soss spfs splo splp splr spls spoo spop spor spos sppf spps spro sprs spso spsp spss sros srps srsp ssfl ssfp sslp ssop sspf sspl sspo ssps ssrl ssrs sssf ssss