f--k ffff ffps ffrr ffss fofo fogg fogo fogs foof fook foos fopp fops for- forg fork foro forr fors foso foss fpgs fprf frog frop fros frps frso fsfo fsgs fspf fssf fssp gfor gfps ggfg gggg ggpo ggss gkrp goff gofr gogo gogs goof goog gook goop goor goos gopo gops gorf gorg goro gorp gorr gors goso goss gpfs gpgp gpos gprp gprs gpsg gpso gpss grof grog grok groo grop gror gros grps grrr grrs grss gsfp gsos k-os kfff kffg kffk kfgo kfgr kfog kfok kfoo kfor kfpr kfrg kfro kfrp kfrr kfrs kfsg kfsk kfsp kfsr kgff kgfk kggf kggg kggo kggr kgks kgor kgos kgpf kgpg kgpr kgrg kgrk kgro kgrr kgrs kgso kgsp kgsr kkfg kkfr kkfs kkgo kkgr kkkk kkoo kkor kkpk kkps kkrf kkrk kkro kkrr kkrs kksf kksp kksr kkss koff kofg kofk kofo kofp kogg kogo kokf kokk koko kokp kokr koks koog kook kooo koop koor koos kopf kopp kopr kops korf korg kork koro korr kors kos- kosf kosg koso kosp kosr koss kpfk kpfr kpgg kpgr kpgs kpkk kpkr kpof kpok kpoo kpop kppk kppo kppp kppr kprf kprg kprk kpro kprp kprr kprs kpsf kpso kpsp krff krfg krfo krfp krfs krgs krkk krko krkr krks krof krog krok kroo krop kror kros krpr krps krrf krrg krrk krro krrr krrs krsf krsk krsr krss ksfo ksfr ksgf ksgg ksgr kskf kskg kskk ksko kskr ksks ksof ksok ksoo ksop ksor ksos kspg kspk kspo kspr ksps ksrf ksrg ksro ksrp ksrr ksrs ksso kssr ksss off- offo offr offs ofgo ofor ogfr ogog ogro okgo okko okok okor okpo okro okso ooff oofs oooo ooos oops opkg opo- opor opos oppo opps orff orfs orgo orgs orko oro- orof orok oror oros orps orro orrs orsk orso osoo osor osos osro osso pfff pffr pfgs pfkp pfps pgss pkgs poff pogg pogo pogs poko poof pook poop poor poos pop- popo popp pops porg pork poro porr pors posk poso poss ppos pppo pppp ppps pprf ppsf ppss prfs prgs pro- prof prog proo prop pros prps prrs prso prss psfk psfs psgr psos pspp pspr psps psrk psrp psso rfgs rkkf rkos rkss roff rofo rogg rogo rokk roko rokr roks roof roog rook roop roor roos ropo rops rork roro roso rosp ross rpgs rpof rpos rpps rrrr rrsp rsos rspk rspo rsps s-os sfgp sfog sfor sfos sfro sfss sggg sggs sgps sgro sgss skog skop skor skpo skss sofo sogo sogs sokk soko soof soog sook soop soor soos sopo sopp sops sorg soro sorr sors soso soss spfs spkr spok spoo spop spor spos sppf spps spro sprs spso spsp spss sros srps srsp ssfp ssgs ssop sspf sspo ssps ssrg ssrs sssf ssss