f--k ffff ffps ffrr ffss flok floo flop flor flos fofo folk foll folo folr fols foof fook fool foos fopp fops for- fork forl foro forr fors foso foss fprf frol frop fros frps frso fsfo fspf fssf fssp k-lo k-os kfff kffk kflf kfll kflo kflp kfls kfok kfoo kfor kfpr kfro kfrp kfrr kfrs kfsk kfsp kfsr kkfr kkfs kkkk kklf kkll kklo kkls kkol kkoo kkor kkpk kkpl kkps kkrf kkrk kkrl kkro kkrr kkrs kksf kksp kksr kkss klff klkk klkl klko klkr klks kllk kllp klls klok klol kloo klop klor klos klpf klpr klrf klrk klrr klrs klsf klsr koff kofk kofo kofp kokf kokk koko kokp kokr koks kolf kolk koll kolo kolr kols kook kool kooo koop koor koos kopf kopp kopr kops korf kork korl koro korr kors kos- kosf koso kosp kosr koss kpfk kpfr kpkk kpkl kpkr kplk kplo kplr kpof kpok kpol kpoo kpop kppk kppl kppo kppp kppr kprf kprk kprl kpro kprp kprr kprs kpsf kpso kpsp krff krfo krfp krfs krkk krko krkr krks krlf krof krok krol kroo krop kror kros krpl krpr krps krrf krrk krrl krro krrr krrs krsf krsk krsl krsr krss ksfo ksfr kskf kskk ksko kskr ksks kslk ksll kslo kslr ksof ksok ksol ksoo ksop ksor ksos kspk kspl kspo kspr ksps ksrf ksro ksrp ksrr ksrs kssl ksso kssr ksss lkfs lkrs llks llll lloo llps loff lokk loko loll lolo lols loof look lool loop loor loos lopp lops lork loro lors loso losp loss lpfp lppl lprp lpss lrps lrrr ls-r lsof lspl lspr lsso lssp lssr off- offo offr offs ofor okko oklo okok okol okor okpo okro okso olfs ollo olof olor olos ooff oofs oolo oooo ooos oops opls opo- opor opos oppo opps orff orfs orko orlo oro- orof orok oror oros orps orro orrs orsk orso oslo osoo osor osos osro osso pfff pffr pfkl pfkp pfps pklr plff plkk plok ploo plop plos plpp plss poff poko polk poll polo pols poof pook pool poop poor poos pop- popo popp pops pork poro porr pors posk poso poss pplo ppos pppo pppp ppps pprf ppsf ppss prfs prlr prls pro- prof prol proo prop pros prps prrs prsl prso prss psfk psfs psol psos pspp pspr psps psrk psrp psso rffl rkkf rkos rkss rlls roff rofl rofo rokk roko rokr roks rolf rolk roll rolo rolp roof rook rool roop roor roos ropo rops rork roro roso rosp ross rpls rpof rpos rpps rrrr rrsp rslp rsos rspk rspo rsps rssl s-os sfls sfor sfos sfro sfss skol skop skor skpo skss sllp sloo slop slos slpp slps slrp slrs sofo sokk soko solf solk soll solo solp solr sols soof sook sool soop soor soos sopo sopp sops soro sorr sors soso soss spfs spkl spkr splo splp splr spls spok 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